236 questions
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votes
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Iβm seeing a mismatch between builds: Release gives the physically correct curves, while Debug diverges..Flags: Release = /O2/Qsave ;Debug=/Od /Qsave [closed]
Iβm seeing a mismatch between builds: Release gives the physically correct curves, while Debug diverges.
Flags: Release = /O2 /heap-arrays0 /warn:interfaces /real-size:64 /Qsave /check:none; Debug = /...
-2
votes
1
answer
147
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Expression template enumeration yields to "invalid arithmetic between different enumeration types" intel C++ 2024 compiler error
Compilation of (a solution containing) this code in a AAD3.h header :
#include <memory>
#include <string>
template <class E>
class Expression
{};
/**********************************...
- 186
0
votes
1
answer
45
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how to use mkl_dcsrgemv or other functions in OneAPI to cal. scalar prodoct between mass dim sparse matrix and vector?
I program in fortran with Intel OneAPI compiler ifx and MKL packages.
I want to cal. the scalar product between a mass dim sparse matrix and a vector.
When the dim of the sparse matrix could be ...
2
votes
1
answer
108
views
oneAPI TBB fixed_pool malloc() function keeps failing
SUMMARY
I've been trying to use the fixed_pool feature in my project, but the malloc() function keeps failing, returning nullptr.
I also tried to run the sample code in the docs : https://www.intel....
- 23
0
votes
1
answer
64
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R matrix calculations less precise with Intel oneMKL
I have installed Intel oneAPI Math Kernel Library (oneMKL) on Windows 10 and then used the trick described here to slip those DLL's to R without having to recompile R. The 7-fold speedup of matrix ...
- 60.1k
0
votes
1
answer
114
views
ifx "ignoring unknown option '/version'
I am using Visual Studio 2022 with Intel OneAPI (Base + HPC) to try and create a Fortran program in Windows 11. I'm having a few issues compiling which I'm troubleshooting, but I'm stumped that ifx ...
- 48
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0
answers
56
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Intel software improvement program dialog box -- consent form starts each time application is profiled
I start profiling my application from the command line with the following shell script:
source /opt/intel/oneapi/setvars.sh
vtune -collect hotspots --app-working-dir=$PWD -- $PWD/MyExecutable
This ...
7
votes
1
answer
155
views
How can I make TBB parallel_for_each work with std::views::zip?
I'm replacing our own in-house ZipIterator/ZipRange implementation with std::views::zip and am running into a wall when it comes to TBB's parallel_for_each.
With our own ZipRange, it was perfectly ...
- 77k
1
vote
0
answers
40
views
Toolset tag in filenames of Boost static libraries compiled with Intel OneAPI DPC++
I've compiled the Boost 1.87 libraries using the Intel OneAPI DPC++ compiler 2025.0.4. I followed the instructions given here for Windows. My project-config.jam file (which is created by running ...
- 121
2
votes
0
answers
94
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Poor perf from aocc+amd-fftw in linux with AMD Genoa CPU (compared to built with Intel icpx+mkl)
I have a very simple 3D in-place FFT transform code with FFTW and openmp multi-thread support. I tried to get the best performance in a linux machine (Ubuntu with AMD Genoa CPUs -2 sockets). I built ...
- 31
0
votes
2
answers
122
views
Concurrent kernels using oneAPI SYCL and Nvidia GPU plugin
I'm trying to run two kernels concurrently on a single Nvidia GPU using oneAPI SYCL and the Nvidia plugin. Is this possible? If not, why? Here is where I'm at so far: I'm able to run two kernels ...
0
votes
0
answers
247
views
mpirun hangs no debug, no errors, was working but a recent install
For reasons unknown but probably trivially silly, mpirun hangs.
I am running on localhost, I can ssh to localhost cleanly - no need for passwords as I have keys set up.
Command is:
mpirun -prtemca -np ...
- 1
0
votes
0
answers
94
views
Comping `gcc` for different host/target CPU
I am on a system where I need to compile gcc-14 and clang-19 from scratch. The host CPU has the characteristics [1] and the target has [2]. So far my strategy to compile gcc was as follows:
# git ...
- 554
0
votes
1
answer
249
views
Linker error: duplicate symbols from libucrt and libmmt, but need both
I'm trying to build a project with the Intel OneAPI 2024.2.1 compiler.
My 32-bit release build has the issue of multiply defined symbols.
There's a few math functions that are causing problems:
lld-...
- 473
1
vote
1
answer
75
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Link options are inserted before /link keyword in CMakeLists (Intel OneAPI compiler)
I'm getting a linker error because of a conflict between liburctd.lib and libmmt.lib. Why I'm getting that is a whole other question.
In trying to figure that out, I wanted to see if just setting /...
- 473