topic VML 64-bit API Bug Report in Intel® oneAPI Math Kernel Library https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/VML-64-bit-API-Bug-Report/m-p/1752122#M37613 <P>The VML 64-bit API appears to internally dispatch to the VML 32-bit API. When the vector length parameter exceeds `INT_MAX`, it crashes. Defining `-DMKL_MKL_ILP64` does not help. Below is a minimum reproducible example.</P><LI-CODE lang="markup">#include &lt;mkl_vml.h&gt; #include &lt;mkl_service.h&gt; #include &lt;vector&gt; int main() { mkl_set_interface_layer(MKL_INTERFACE_ILP64); // Does not resolve crash // auto constexpr N = int64_t{INT_MAX}; // Works auto constexpr N = int64_t{INT_MAX} + int64_t{1}; // Crashes auto constexpr k = float{1}; auto xs = std::vector&lt;float&gt;(N); vsAddI_64(N, xs.data(), 1, &amp;k, 0, xs.data(), 1); }</LI-CODE><P>&nbsp;`__INTEL_MKL_BUILD_DATE` is `20260401`<BR />Linking against `mkl_rt.3.dll`</P><P>&nbsp;</P><P>Stacktrace</P><DIV>1 vmldLinearFracI_26&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;mkl_vml_avx2_3&nbsp; &nbsp; &nbsp; &nbsp;0x7ff97a9eee14<BR />2 mkl_vml_serv_threader_s_2iI_1oI mkl_intel_thread_3&nbsp; &nbsp;0x7ff982641ec6<BR />3 vsAddI_64&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; mkl_rt_3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0x7ff98610536e<BR />4 main&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; main.cxx&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 37&nbsp; 0x7ff67466182a<BR />5 invoke_main&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_common.inl 79&nbsp; &nbsp;0x7ff6746637f9<BR />6 __scrt_common_main_seh&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_common.inl 288 0x7ff6746636a2<BR />7 __scrt_common_main&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_common.inl 331 0x7ff67466355e<BR />8 mainCRTStartup&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_main.cpp&nbsp; &nbsp; &nbsp; &nbsp;17&nbsp; &nbsp;0x7ff67466388e<BR />9 BaseThreadInitThunk&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;KERNEL32&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0x7ffa5bf8e957<BR />10 RtlUserThreadStart&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ntdll&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0x7ffa5d607c1c</DIV><P><BR />Processor 13th Gen Intel(R) Core(TM) i5-13420H (2.10 GHz)<BR />Installed RAM 16.0 GB (15.7 GB usable)<BR />Graphics card NVIDIA GeForce RTX 3050 6GB Laptop GPU (6 GB)<BR />Intel(R) UHD Graphics (128 MB)<BR />Storage 258 GB of 477 GB used<BR />System type 64-bit operating system, x64-based processor<BR /><BR /></P> Tue, 23 Jun 2026 12:31:51 GMT meding 2026-06-23T12:31:51Z VML 64-bit API Bug Report https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/VML-64-bit-API-Bug-Report/m-p/1752122#M37613 <P>The VML 64-bit API appears to internally dispatch to the VML 32-bit API. When the vector length parameter exceeds `INT_MAX`, it crashes. Defining `-DMKL_MKL_ILP64` does not help. Below is a minimum reproducible example.</P><LI-CODE lang="markup">#include &lt;mkl_vml.h&gt; #include &lt;mkl_service.h&gt; #include &lt;vector&gt; int main() { mkl_set_interface_layer(MKL_INTERFACE_ILP64); // Does not resolve crash // auto constexpr N = int64_t{INT_MAX}; // Works auto constexpr N = int64_t{INT_MAX} + int64_t{1}; // Crashes auto constexpr k = float{1}; auto xs = std::vector&lt;float&gt;(N); vsAddI_64(N, xs.data(), 1, &amp;k, 0, xs.data(), 1); }</LI-CODE><P>&nbsp;`__INTEL_MKL_BUILD_DATE` is `20260401`<BR />Linking against `mkl_rt.3.dll`</P><P>&nbsp;</P><P>Stacktrace</P><DIV>1 vmldLinearFracI_26&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;mkl_vml_avx2_3&nbsp; &nbsp; &nbsp; &nbsp;0x7ff97a9eee14<BR />2 mkl_vml_serv_threader_s_2iI_1oI mkl_intel_thread_3&nbsp; &nbsp;0x7ff982641ec6<BR />3 vsAddI_64&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; mkl_rt_3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0x7ff98610536e<BR />4 main&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; main.cxx&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 37&nbsp; 0x7ff67466182a<BR />5 invoke_main&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_common.inl 79&nbsp; &nbsp;0x7ff6746637f9<BR />6 __scrt_common_main_seh&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_common.inl 288 0x7ff6746636a2<BR />7 __scrt_common_main&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_common.inl 331 0x7ff67466355e<BR />8 mainCRTStartup&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; exe_main.cpp&nbsp; &nbsp; &nbsp; &nbsp;17&nbsp; &nbsp;0x7ff67466388e<BR />9 BaseThreadInitThunk&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;KERNEL32&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0x7ffa5bf8e957<BR />10 RtlUserThreadStart&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ntdll&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0x7ffa5d607c1c</DIV><P><BR />Processor 13th Gen Intel(R) Core(TM) i5-13420H (2.10 GHz)<BR />Installed RAM 16.0 GB (15.7 GB usable)<BR />Graphics card NVIDIA GeForce RTX 3050 6GB Laptop GPU (6 GB)<BR />Intel(R) UHD Graphics (128 MB)<BR />Storage 258 GB of 477 GB used<BR />System type 64-bit operating system, x64-based processor<BR /><BR /></P> Tue, 23 Jun 2026 12:31:51 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/VML-64-bit-API-Bug-Report/m-p/1752122#M37613 meding 2026-06-23T12:31:51Z