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<li class="navelem"><a class="el" href="namespacefaiss.html">faiss</a></li><li class="navelem"><b>gpu</b></li><li class="navelem"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a></li> </ul>
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<div class="title">faiss::gpu::Tensor< T, Dim, Contig, IndexT, PtrTraits > Class Template Reference</div> </div>
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<p>Our tensor type.
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Inheritance diagram for faiss::gpu::Tensor< T, Dim, Contig, IndexT, PtrTraits >:</div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a072171dcad6979257d1d28dfdc9c6eb0"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom">{ <b>NumDim</b> = Dim
}</td></tr>
<tr class="separator:a072171dcad6979257d1d28dfdc9c6eb0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a828306db3c0bcaecca6d3888eb3bda24"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom">{ <b>IsContig</b> = Contig
}</td></tr>
<tr class="separator:a828306db3c0bcaecca6d3888eb3bda24"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a09e258dd21d1c8634c369c43800d05ce"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a09e258dd21d1c8634c369c43800d05ce"></a>
typedef T </td><td class="memItemRight" valign="bottom"><b>DataType</b></td></tr>
<tr class="separator:a09e258dd21d1c8634c369c43800d05ce"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3df475753175dcd559fda0be1d7fc2f1"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3df475753175dcd559fda0be1d7fc2f1"></a>
typedef IndexT </td><td class="memItemRight" valign="bottom"><b>IndexType</b></td></tr>
<tr class="separator:a3df475753175dcd559fda0be1d7fc2f1"><td class="memSeparator" colspan="2"> </td></tr>
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typedef PtrTraits< T >::PtrType </td><td class="memItemRight" valign="bottom"><b>DataPtrType</b></td></tr>
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typedef <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, <br class="typebreak"/>
IndexT, PtrTraits > </td><td class="memItemRight" valign="bottom"><b>TensorType</b></td></tr>
<tr class="separator:a89e9ee538561a5eae8af40ff619a7ec0"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a151fd78dd5695b1346739e32a9e76309"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a151fd78dd5695b1346739e32a9e76309"></a>
__host__ __device__ </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a151fd78dd5695b1346739e32a9e76309">Tensor</a> ()</td></tr>
<tr class="memdesc:a151fd78dd5695b1346739e32a9e76309"><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <br/></td></tr>
<tr class="separator:a151fd78dd5695b1346739e32a9e76309"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad91651847f8b9f68bbf8e55cdfadf60b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ad91651847f8b9f68bbf8e55cdfadf60b"></a>
__host__ __device__ </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ad91651847f8b9f68bbf8e55cdfadf60b">Tensor</a> (<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, IndexT, PtrTraits > &t)=default</td></tr>
<tr class="memdesc:ad91651847f8b9f68bbf8e55cdfadf60b"><td class="mdescLeft"> </td><td class="mdescRight">Copy constructor. <br/></td></tr>
<tr class="separator:ad91651847f8b9f68bbf8e55cdfadf60b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8ae06b3adf94ff6e57c3779e3b0efc1d"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8ae06b3adf94ff6e57c3779e3b0efc1d"></a>
__host__ __device__ </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a8ae06b3adf94ff6e57c3779e3b0efc1d">Tensor</a> (<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, IndexT, PtrTraits > &&t)=default</td></tr>
<tr class="memdesc:a8ae06b3adf94ff6e57c3779e3b0efc1d"><td class="mdescLeft"> </td><td class="mdescRight">Move constructor. <br/></td></tr>
<tr class="separator:a8ae06b3adf94ff6e57c3779e3b0efc1d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a55896db55a03e43a1789886aa22a0ba4"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a55896db55a03e43a1789886aa22a0ba4"></a>
__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
Dim, Contig, IndexT, PtrTraits > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a55896db55a03e43a1789886aa22a0ba4">operator=</a> (<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, IndexT, PtrTraits > &t)=default</td></tr>
<tr class="memdesc:a55896db55a03e43a1789886aa22a0ba4"><td class="mdescLeft"> </td><td class="mdescRight">Assignment. <br/></td></tr>
<tr class="separator:a55896db55a03e43a1789886aa22a0ba4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5d71b20e7531f6f09c37e96799c358cf"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a5d71b20e7531f6f09c37e96799c358cf"></a>
__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
Dim, Contig, IndexT, PtrTraits > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a5d71b20e7531f6f09c37e96799c358cf">operator=</a> (<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, IndexT, PtrTraits > &&t)</td></tr>
<tr class="memdesc:a5d71b20e7531f6f09c37e96799c358cf"><td class="mdescLeft"> </td><td class="mdescRight">Move assignment. <br/></td></tr>
<tr class="separator:a5d71b20e7531f6f09c37e96799c358cf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a08a79780414069111c471d67af5676ac"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a08a79780414069111c471d67af5676ac"></a>
__host__ __device__ </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a08a79780414069111c471d67af5676ac">Tensor</a> (DataPtrType <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a37d3ac0dffcaad29f09d6e85fb07b335">data</a>, const IndexT <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ac3e0306267da475d8140bf6d12cf4af6">sizes</a>[Dim])</td></tr>
<tr class="memdesc:a08a79780414069111c471d67af5676ac"><td class="mdescLeft"> </td><td class="mdescRight">Constructor that calculates strides with no padding. <br/></td></tr>
<tr class="separator:a08a79780414069111c471d67af5676ac"><td class="memSeparator" colspan="2"> </td></tr>
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__host__ __device__ </td><td class="memItemRight" valign="bottom"><b>Tensor</b> (DataPtrType <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a37d3ac0dffcaad29f09d6e85fb07b335">data</a>, std::initializer_list< IndexT > <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ac3e0306267da475d8140bf6d12cf4af6">sizes</a>)</td></tr>
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<tr class="memitem:a8da5c2001d2f5e97abe9f6ad9eed34a9"><td class="memItemLeft" align="right" valign="top">__host__ __device__ </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a8da5c2001d2f5e97abe9f6ad9eed34a9">Tensor</a> (DataPtrType <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a37d3ac0dffcaad29f09d6e85fb07b335">data</a>, const IndexT <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ac3e0306267da475d8140bf6d12cf4af6">sizes</a>[Dim], const IndexT <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a9a0a293f287e9cba68f31c9e57b79c64">strides</a>[Dim])</td></tr>
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<tr class="memitem:ae981a94263044f38be89d690dd958426"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae981a94263044f38be89d690dd958426"></a>
__host__ void </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ae981a94263044f38be89d690dd958426">copyFrom</a> (<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, IndexT, PtrTraits > &t, cudaStream_t stream)</td></tr>
<tr class="memdesc:ae981a94263044f38be89d690dd958426"><td class="mdescLeft"> </td><td class="mdescRight">Copies a tensor into ourselves; sizes must match. <br/></td></tr>
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<tr class="memitem:a6ce60d784817469d5b47b560da177b92"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6ce60d784817469d5b47b560da177b92"></a>
__host__ void </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a6ce60d784817469d5b47b560da177b92">copyTo</a> (<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, Contig, IndexT, PtrTraits > &t, cudaStream_t stream)</td></tr>
<tr class="memdesc:a6ce60d784817469d5b47b560da177b92"><td class="mdescLeft"> </td><td class="mdescRight">Copies ourselves into a tensor; sizes must match. <br/></td></tr>
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<tr class="memitem:a013fac5bd3c78e90b35a6f46dbf3ffda"><td class="memTemplParams" colspan="2">template<int OtherDim> </td></tr>
<tr class="memitem:a013fac5bd3c78e90b35a6f46dbf3ffda"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a013fac5bd3c78e90b35a6f46dbf3ffda">isSame</a> (const <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, OtherDim, Contig, IndexT, PtrTraits > &rhs) const </td></tr>
<tr class="separator:a013fac5bd3c78e90b35a6f46dbf3ffda"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab462574aa0756b701e52279c13449764"><td class="memTemplParams" colspan="2">template<typename U > </td></tr>
<tr class="memitem:ab462574aa0756b701e52279c13449764"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< U, <br class="typebreak"/>
Dim, Contig, IndexT, PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ab462574aa0756b701e52279c13449764">cast</a> ()</td></tr>
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template<typename U > </td></tr>
<tr class="memitem:a0bee6b10584a0a201dad5db3e3d37720"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ const <br class="typebreak"/>
<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< U, Dim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a0bee6b10584a0a201dad5db3e3d37720">cast</a> () const </td></tr>
<tr class="memdesc:a0bee6b10584a0a201dad5db3e3d37720"><td class="mdescLeft"> </td><td class="mdescRight">Const version of <code>cast</code> <br/></td></tr>
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<tr class="memitem:aab60b0711646ffe587b62a5434d53c6a"><td class="memTemplParams" colspan="2">template<typename U > </td></tr>
<tr class="memitem:aab60b0711646ffe587b62a5434d53c6a"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< U, <br class="typebreak"/>
Dim, Contig, IndexT, PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#aab60b0711646ffe587b62a5434d53c6a">castResize</a> ()</td></tr>
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template<typename U > </td></tr>
<tr class="memitem:ae2cdd4f1eecbbca286c0d594143030f3"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ const <br class="typebreak"/>
<a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< U, Dim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ae2cdd4f1eecbbca286c0d594143030f3">castResize</a> () const </td></tr>
<tr class="memdesc:ae2cdd4f1eecbbca286c0d594143030f3"><td class="mdescLeft"> </td><td class="mdescRight">Const version of <code>castResize</code> <br/></td></tr>
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template<typename U > </td></tr>
<tr class="memitem:a9b3a5fb3a903295b7d2f8cb2caae0352"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a9b3a5fb3a903295b7d2f8cb2caae0352">canCastResize</a> () const </td></tr>
<tr class="memdesc:a9b3a5fb3a903295b7d2f8cb2caae0352"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if we can <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#aab60b0711646ffe587b62a5434d53c6a">castResize()</a> this tensor to the new type. <br/></td></tr>
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<tr class="memitem:afa66c4592bc873a3f663d765cb9ea2c0"><td class="memTemplParams" colspan="2">template<typename NewIndexT > </td></tr>
<tr class="memitem:afa66c4592bc873a3f663d765cb9ea2c0"><td class="memTemplItemLeft" align="right" valign="top">__host__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, Dim, <br class="typebreak"/>
Contig, NewIndexT, PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#afa66c4592bc873a3f663d765cb9ea2c0">castIndexType</a> () const </td></tr>
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<tr class="memitem:a080cf59b73bee015c02947009e70ce07"><td class="memTemplParams" colspan="2">template<typename NewIndexT > </td></tr>
<tr class="memitem:a080cf59b73bee015c02947009e70ce07"><td class="memTemplItemLeft" align="right" valign="top">__host__ bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a080cf59b73bee015c02947009e70ce07">canCastIndexType</a> () const </td></tr>
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<tr class="memitem:a37d3ac0dffcaad29f09d6e85fb07b335"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a37d3ac0dffcaad29f09d6e85fb07b335"></a>
__host__ __device__ DataPtrType </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a37d3ac0dffcaad29f09d6e85fb07b335">data</a> ()</td></tr>
<tr class="memdesc:a37d3ac0dffcaad29f09d6e85fb07b335"><td class="mdescLeft"> </td><td class="mdescRight">Returns a raw pointer to the start of our data. <br/></td></tr>
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<tr class="memitem:ad35e0c816162fd08e372b21b79cab6c1"><td class="memItemLeft" align="right" valign="top">__host__ __device__ DataPtrType </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ad35e0c816162fd08e372b21b79cab6c1">end</a> ()</td></tr>
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__host__ __device__ const <br class="typebreak"/>
DataPtrType </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a9a098dad7e211328d1ae8b00d02839ce">data</a> () const </td></tr>
<tr class="memdesc:a9a098dad7e211328d1ae8b00d02839ce"><td class="mdescLeft"> </td><td class="mdescRight">Returns a raw pointer to the start of our data (const). <br/></td></tr>
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<tr class="memitem:a00d2d17504f63b9e834afac730a64324"><td class="memItemLeft" align="right" valign="top">__host__ __device__ DataPtrType </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a00d2d17504f63b9e834afac730a64324">end</a> () const </td></tr>
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template<typename U > </td></tr>
<tr class="memitem:a7c987316708113dafd11971092d59f69"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ PtrTraits<br class="typebreak"/>
< U >::PtrType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a7c987316708113dafd11971092d59f69">dataAs</a> ()</td></tr>
<tr class="memdesc:a7c987316708113dafd11971092d59f69"><td class="mdescLeft"> </td><td class="mdescRight">Cast to a different datatype. <br/></td></tr>
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<tr class="memitem:ad02cd32977ebf89636c8d085b4470c2e"><td class="memTemplParams" colspan="2"><a class="anchor" id="ad02cd32977ebf89636c8d085b4470c2e"></a>
template<typename U > </td></tr>
<tr class="memitem:ad02cd32977ebf89636c8d085b4470c2e"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ const <br class="typebreak"/>
PtrTraits< const U >::PtrType </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ad02cd32977ebf89636c8d085b4470c2e">dataAs</a> () const </td></tr>
<tr class="memdesc:ad02cd32977ebf89636c8d085b4470c2e"><td class="mdescLeft"> </td><td class="mdescRight">Cast to a different datatype. <br/></td></tr>
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<tr class="memitem:a204ea1c3232b51512a9c027bb44ee3c4"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a204ea1c3232b51512a9c027bb44ee3c4"></a>
__host__ __device__ <br class="typebreak"/>
<a class="el" href="classfaiss_1_1gpu_1_1detail_1_1SubTensor.html">detail::SubTensor</a>< <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">TensorType</a>, <br class="typebreak"/>
Dim-1, PtrTraits > </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a204ea1c3232b51512a9c027bb44ee3c4">operator[]</a> (IndexT)</td></tr>
<tr class="memdesc:a204ea1c3232b51512a9c027bb44ee3c4"><td class="mdescLeft"> </td><td class="mdescRight">Returns a read/write view of a portion of our tensor. <br/></td></tr>
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<tr class="memitem:a6538556caad2fd01bd81ba441185d9f3"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6538556caad2fd01bd81ba441185d9f3"></a>
__host__ __device__ const <br class="typebreak"/>
<a class="el" href="classfaiss_1_1gpu_1_1detail_1_1SubTensor.html">detail::SubTensor</a>< <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">TensorType</a>, <br class="typebreak"/>
Dim-1, PtrTraits > </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a6538556caad2fd01bd81ba441185d9f3">operator[]</a> (IndexT) const </td></tr>
<tr class="memdesc:a6538556caad2fd01bd81ba441185d9f3"><td class="mdescLeft"> </td><td class="mdescRight">Returns a read/write view of a portion of our tensor (const). <br/></td></tr>
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<tr class="memitem:a2d276c97faf432cdc9f3552da63c0d3c"><td class="memItemLeft" align="right" valign="top">__host__ __device__ IndexT </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a2d276c97faf432cdc9f3552da63c0d3c">getSize</a> (int i) const </td></tr>
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<tr class="memitem:a57855c6e0c529a309168833017049ab5"><td class="memItemLeft" align="right" valign="top">__host__ __device__ IndexT </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a57855c6e0c529a309168833017049ab5">getStride</a> (int i) const </td></tr>
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<tr class="memitem:a41f7f08246bf8584929693bb1896205f"><td class="memItemLeft" align="right" valign="top">__host__ __device__ IndexT </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a41f7f08246bf8584929693bb1896205f">numElements</a> () const </td></tr>
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<tr class="memitem:aae42c9c020682fd094958976d8e610ad"><td class="memItemLeft" align="right" valign="top">__host__ __device__ size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#aae42c9c020682fd094958976d8e610ad">getSizeInBytes</a> () const </td></tr>
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__host__ __device__ const IndexT * </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ac3e0306267da475d8140bf6d12cf4af6">sizes</a> () const </td></tr>
<tr class="memdesc:ac3e0306267da475d8140bf6d12cf4af6"><td class="mdescLeft"> </td><td class="mdescRight">Returns the size array. <br/></td></tr>
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<tr class="memitem:a9a0a293f287e9cba68f31c9e57b79c64"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a9a0a293f287e9cba68f31c9e57b79c64"></a>
__host__ __device__ const IndexT * </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a9a0a293f287e9cba68f31c9e57b79c64">strides</a> () const </td></tr>
<tr class="memdesc:a9a0a293f287e9cba68f31c9e57b79c64"><td class="mdescLeft"> </td><td class="mdescRight">Returns the stride array. <br/></td></tr>
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<tr class="memitem:acd445331bcc0373cf925f7a02660107c"><td class="memItemLeft" align="right" valign="top">__host__ __device__ bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#acd445331bcc0373cf925f7a02660107c">isContiguous</a> () const </td></tr>
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<tr class="memitem:a9266778f33c175457d29b5c6dcc1a444"><td class="memItemLeft" align="right" valign="top">__host__ __device__ bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a9266778f33c175457d29b5c6dcc1a444">isConsistentlySized</a> (int i) const </td></tr>
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__host__ __device__ bool </td><td class="memItemRight" valign="bottom"><b>isConsistentlySized</b> () const </td></tr>
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__host__ __device__ bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a31075cd6df497e4c1a7c7e47fa2603ca">isContiguousDim</a> (int i) const </td></tr>
<tr class="memdesc:a31075cd6df497e4c1a7c7e47fa2603ca"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if the given dimension index has no padding. <br/></td></tr>
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<tr class="memitem:aa8b48391a291a7e214c7204d81cd9d73"><td class="memItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
Dim, Contig, IndexT, PtrTraits > </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#aa8b48391a291a7e214c7204d81cd9d73">transpose</a> (int dim1, int dim2) const </td></tr>
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<tr class="memitem:ad6df1805b76f74018bc94fffab8987ac"><td class="memTemplParams" colspan="2">template<int NewDim> </td></tr>
<tr class="memitem:ad6df1805b76f74018bc94fffab8987ac"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
NewDim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ad6df1805b76f74018bc94fffab8987ac">upcastOuter</a> ()</td></tr>
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<tr class="memitem:a70308137b566362d4cc37d3e71b3ae98"><td class="memTemplParams" colspan="2">template<int NewDim> </td></tr>
<tr class="memitem:a70308137b566362d4cc37d3e71b3ae98"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
NewDim, Contig, IndexT, <br class="typebreak"/>
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<tr class="memitem:a5591c571ac52482fc7ceea6ef99af794"><td class="memTemplParams" colspan="2">template<int NewDim> </td></tr>
<tr class="memitem:a5591c571ac52482fc7ceea6ef99af794"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
NewDim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a5591c571ac52482fc7ceea6ef99af794">downcastOuter</a> ()</td></tr>
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<tr class="memitem:a4bcfb3f04077a42e0d8c924e11b2d637"><td class="memTemplParams" colspan="2">template<int NewDim> </td></tr>
<tr class="memitem:a4bcfb3f04077a42e0d8c924e11b2d637"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
NewDim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a4bcfb3f04077a42e0d8c924e11b2d637">downcastInner</a> ()</td></tr>
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<tr class="memitem:a3095eaec5711fe697c16c21598a8ddc1"><td class="memTemplParams" colspan="2">template<int SubDim> </td></tr>
<tr class="memitem:a3095eaec5711fe697c16c21598a8ddc1"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
SubDim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a3095eaec5711fe697c16c21598a8ddc1">view</a> (DataPtrType at)</td></tr>
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<tr class="memitem:a67ccf916f78dacf0ae0d4816a663eb3f"><td class="memTemplParams" colspan="2">template<int SubDim> </td></tr>
<tr class="memitem:a67ccf916f78dacf0ae0d4816a663eb3f"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
SubDim, Contig, IndexT, <br class="typebreak"/>
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Dim, Contig, IndexT, PtrTraits > </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a782cd978394660371a22229f02e49e60">narrowOutermost</a> (IndexT start, IndexT size)</td></tr>
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<tr class="memitem:a58d7a953431def329bac11374679c2dd"><td class="memItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
Dim, false, IndexT, PtrTraits > </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a58d7a953431def329bac11374679c2dd">narrow</a> (int dim, IndexT start, IndexT size)</td></tr>
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<tr class="memitem:ad16d6d4cd302805370d21ef1a12a21f6"><td class="memTemplParams" colspan="2">template<int NewDim> </td></tr>
<tr class="memitem:ad16d6d4cd302805370d21ef1a12a21f6"><td class="memTemplItemLeft" align="right" valign="top">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, <br class="typebreak"/>
NewDim, Contig, IndexT, <br class="typebreak"/>
PtrTraits > </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ad16d6d4cd302805370d21ef1a12a21f6">view</a> (std::initializer_list< IndexT > <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#ac3e0306267da475d8140bf6d12cf4af6">sizes</a>)</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
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DataPtrType </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a08024dbcaed3c1235cac62b476f14509">data_</a></td></tr>
<tr class="memdesc:a08024dbcaed3c1235cac62b476f14509"><td class="mdescLeft"> </td><td class="mdescRight">Raw pointer to where the tensor data begins. <br/></td></tr>
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IndexT </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#a46c20e6be3ce16feb99f8d3a5ee268c9">stride_</a> [Dim]</td></tr>
<tr class="memdesc:a46c20e6be3ce16feb99f8d3a5ee268c9"><td class="mdescLeft"> </td><td class="mdescRight">Array of strides (in sizeof(T) terms) per each dimension. <br/></td></tr>
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IndexT </td><td class="memItemRight" valign="bottom"><a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#afe1bd60ecb861eabafaad7362a68ec1f">size_</a> [Dim]</td></tr>
<tr class="memdesc:afe1bd60ecb861eabafaad7362a68ec1f"><td class="mdescLeft"> </td><td class="mdescRight">Size per each dimension. <br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template<typename T, int Dim, bool Contig, typename IndexT, template< typename U > class PtrTraits><br/>
class faiss::gpu::Tensor< T, Dim, Contig, IndexT, PtrTraits ></h3>
<p>Our tensor type. </p>
<p>Templated multi-dimensional array that supports strided access of elements. Main access is through <code>operator[]</code>; e.g., <code>tensor[x][y][z]</code>.</p>
<ul>
<li><code>T</code> is the contained type (e.g., <code>float</code>)</li>
<li><code>Dim</code> is the tensor rank</li>
<li>If <code>Contig</code> is true, then the tensor is assumed to be</li>
<li>contiguous, and only operations that make sense on contiguous</li>
<li>arrays are allowed (e.g., no transpose). Strides are still</li>
<li>calculated, but innermost stride is assumed to be 1.</li>
<li><code>IndexT</code> is the integer type used for size/stride arrays, and for</li>
<li>all indexing math. Default is <code>int</code>, but for large tensors, <code>long</code></li>
<li>can be used instead.</li>
<li><code>PtrTraits</code> are traits applied to our data pointer (T*). By default,</li>
<li>this is just T*, but RestrictPtrTraits can be used to apply T*</li>
<li><b>restrict</b> for alias-free analysis. </li>
</ul>
<p>Definition at line <a class="el" href="Tensor_8cuh_source.html#l00030">30</a> of file <a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a>.</p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="paramtype">DataPtrType </td>
<td class="paramname"><em>data</em>, </td>
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<p>Constructor that takes arbitrary size/stride arrays. Errors if you attempt to pass non-contiguous strides to a contiguous tensor. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00087">87</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<p>Returns true if we can <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html#afa66c4592bc873a3f663d765cb9ea2c0">castIndexType()</a> this tensor to the new index type </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00306">306</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Cast to a tensor of a different type of the same size and stride. U and our type T must be of the same size </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00203">203</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Attempts to cast this tensor to a tensor of a different IndexT. Fails if size or stride entries are not representable in the new IndexT. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00286">286</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Cast to a tensor of a different type which is potentially a different size than our type T. <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html" title="Our tensor type. ">Tensor</a> must be aligned and the innermost dimension must be a size that is a multiple of sizeof(U) / sizeof(T), and the stride of the innermost dimension must be contiguous. The stride of all outer dimensions must be a multiple of sizeof(U) / sizeof(T) as well. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00225">225</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Downcast a tensor of dimension <code>D</code> to some tensor of dimension D' < D by collapsing the leading dimensions. asserts if there is padding on the leading dimensions. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00535">535</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Downcast a tensor of dimension <code>D</code> to some tensor of dimension D' < D by collapsing the leading dimensions. asserts if there is padding on the leading dimensions. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00490">490</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Returns a raw pointer to the end of our data, assuming continuity </p>
<p>Definition at line <a class="el" href="Tensor_8cuh_source.html#l00179">179</a> of file <a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a>.</p>
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<p>Returns a raw pointer to the end of our data, assuming continuity (const) </p>
<p>Definition at line <a class="el" href="Tensor_8cuh_source.html#l00191">191</a> of file <a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a>.</p>
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<td class="memname">__host__ __device__ IndexT <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a>< T, Dim, Contig, IndexT, PtrTraits >::getSize </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>i</em></td><td>)</td>
<td> const</td>
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<p>Returns the size of a given dimension, <code>[0, Dim - 1]</code>. No bounds checking. </p>
<p>Definition at line <a class="el" href="Tensor_8cuh_source.html#l00221">221</a> of file <a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a>.</p>
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template<typename T, int Dim, bool Contig, typename IndexT, template< typename U > class PtrTraits> </div>
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<td class="memname">__host__ __device__ size_t <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a>< T, Dim, Contig, IndexT, PtrTraits >::getSizeInBytes </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>If we are contiguous, returns the total size in bytes of our data </p>
<p>Definition at line <a class="el" href="Tensor_8cuh_source.html#l00237">237</a> of file <a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a>.</p>
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<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>i</em></td><td>)</td>
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<p>Returns the stride of a given dimension, <code>[0, Dim - 1]</code>. No bounds checking. </p>
<p>Definition at line <a class="el" href="Tensor_8cuh_source.html#l00227">227</a> of file <a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a>.</p>
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<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>i</em></td><td>)</td>
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<p>Returns whether a given dimension has only increasing stride from the previous dimension. A tensor that was permuted by exchanging size and stride only will fail this check. If <code>i == 0</code> just check <code>size > 0</code>. Returns <code>false</code> if <code>stride</code> is <code><= 0</code>. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00369">369</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td>(</td>
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<td> const</td>
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<p>Returns true if there is no padding within the tensor and no re-ordering of the dimensions. </p>
<div class="fragment"><div class="line">(stride(i) == size(i + 1) * stride(i + 1)) && stride(dim - 1) == 0</div>
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<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00350">350</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td class="memname">__host__ __device__ bool <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a>< T, Dim, Contig, IndexT, PtrTraits >::isSame </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, OtherDim, Contig, IndexT, PtrTraits > & </td>
<td class="paramname"><em>rhs</em></td><td>)</td>
<td> const</td>
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<p>Returns true if the two tensors are of the same dimensionality, size and stride. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00178">178</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>dim</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">IndexT </td>
<td class="paramname"><em>start</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">IndexT </td>
<td class="paramname"><em>size</em> </td>
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<p>Returns a tensor of the same dimension that is a view of the original tensor with the specified dimension restricted to the elements in the range [start, start + size). Can occur in an arbitrary dimension, and is possibly non-contiguous </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00629">629</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td>(</td>
<td class="paramtype">IndexT </td>
<td class="paramname"><em>start</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">IndexT </td>
<td class="paramname"><em>size</em> </td>
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<p>Returns a tensor of the same dimension that is a view of the original tensor with the specified dimension restricted to the elements in the range [start, start + size) </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00605">605</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td>(</td>
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<p>Returns the total number of elements contained within our data (product of <code>getSize(i)</code>) </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00337">337</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>dim1</em>, </td>
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<td class="paramname"><em>dim2</em> </td>
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<td></td><td> const</td>
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<p>Returns a tensor of the same dimension after transposing the two dimensions given. Does not actually move elements; transposition is made by permuting the size/stride arrays. If the dimensions are not valid, asserts. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00405">405</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<p>Upcast a tensor of dimension <code>D</code> to some tensor of dimension D' > D by padding the lowest/most varying dimensions by 1 e.g., upcasting a 2-d tensor <code>[2][3]</code> to a 4-d tensor <code>[2][3][1][1]</code> </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00463">463</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td>(</td>
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<p>Upcast a tensor of dimension <code>D</code> to some tensor of dimension D' > D by padding the leading dimensions by 1 e.g., upcasting a 2-d tensor <code>[2][3]</code> to a 4-d tensor <code>[1][1][2][3]</code> </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00434">434</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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template<typename T , int Dim, bool Contig, typename IndexT , template< typename U > class PtrTraits> </div>
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template<int SubDim> </div>
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<td class="memname">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, SubDim, Contig, IndexT, PtrTraits > <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a>< T, Dim, Contig, IndexT, PtrTraits >::view </td>
<td>(</td>
<td class="paramtype">DataPtrType </td>
<td class="paramname"><em>at</em></td><td>)</td>
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<p>Returns a tensor that is a view of the <code>SubDim</code>-dimensional slice of this tensor, starting at <code>at</code>. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00578">578</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td class="memname">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, SubDim, Contig, IndexT, PtrTraits > <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a>< T, Dim, Contig, IndexT, PtrTraits >::view </td>
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<p>Returns a tensor that is a view of the <code>SubDim</code>-dimensional slice of this tensor, starting where our data begins </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00598">598</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<td class="memname">__host__ __device__ <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">Tensor</a>< T, NewDim, Contig, IndexT, PtrTraits > <a class="el" href="classfaiss_1_1gpu_1_1Tensor.html">faiss::gpu::Tensor</a>< T, Dim, Contig, IndexT, PtrTraits >::view </td>
<td>(</td>
<td class="paramtype">std::initializer_list< IndexT > </td>
<td class="paramname"><em>sizes</em></td><td>)</td>
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<p>Returns a view of the given tensor expressed as a tensor of a different number of dimensions. Only works if we are contiguous. </p>
<p>Definition at line <a class="el" href="Tensor-inl_8cuh_source.html#l00656">656</a> of file <a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li>/data/users/matthijs/github_faiss/faiss/gpu/utils/<a class="el" href="Tensor_8cuh_source.html">Tensor.cuh</a></li>
<li>/data/users/matthijs/github_faiss/faiss/gpu/utils/<a class="el" href="Tensor-inl_8cuh_source.html">Tensor-inl.cuh</a></li>
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