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May 16, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 Seb <greeenify@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |greeenify@gmail.com --- Comment #1 from Seb <greeenify@gmail.com> --- That's why people are using mir-cpuid these days :/ -- |
May 19, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 Илья Ярошенко <ilyayaroshenko@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ilyayaroshenko@gmail.com --- Comment #2 from Илья Ярошенко <ilyayaroshenko@gmail.com> --- You can try `dub --single report.d` from the mir-cpuid project [1] Does it work for your CPU? [1] https://github.com/libmir/mir-cpuid -- |
May 25, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 Rainer Schuetze <r.sagitario@gmx.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |r.sagitario@gmx.de --- Comment #3 from Rainer Schuetze <r.sagitario@gmx.de> --- I shortly tried it on an AMD Ryzen 8-core, and it failed, too (reported 16 cores, but 1 thread). Debugging it a bit showed that there is probably incomplete support for CPUID#8000_0008: https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf or https://wiki.osdev.org/Detecting_CPU_Topology_(80x86)#AMD:_CPUID_eax.3D0x80000008 I didn't try mir-cpuid, but looking at the source code now, I don't see any use of that CPUID function, so it probably won't work, too. -- |
May 27, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 --- Comment #4 from Илья Ярошенко <ilyayaroshenko@gmail.com> --- Rainer Schuetze, yes thanks. Will add AMD leaf 8 information. https://github.com/libmir/mir-cpuid/issues/40 -- |
May 27, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 --- Comment #5 from Илья Ярошенко <ilyayaroshenko@gmail.com> --- (In reply to Rainer Schuetze from comment #3) > I shortly tried it on an AMD Ryzen 8-core, and it failed, too (reported 16 cores, but 1 thread). Debugging it a bit showed that there is probably incomplete support for CPUID#8000_0008: https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h- 0Fh.pdf or https://wiki.osdev.org/Detecting_CPU_Topology_(80x86)#AMD:_CPUID_eax. 3D0x80000008 > > I didn't try mir-cpuid, but looking at the source code now, I don't see any use of that CPUID function, so it probably won't work, too. CPUID#8000_0008 has been added. https://github.com/libmir/mir-cpuid/pull/41 Rainer Schuetze, could you please check if it works now. -- |
May 28, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 --- Comment #6 from Rainer Schuetze <r.sagitario@gmx.de> --- I tried the latest version of mir-cpuid from github, it reports 16 cores and 16 threads for the 8-core Ryzen. That's no change from earlier versions, but at least slightly better than what core.cpuid does. -- |
May 28, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 --- Comment #7 from Илья Ярошенко <ilyayaroshenko@gmail.com> --- (In reply to Rainer Schuetze from comment #6) > I tried the latest version of mir-cpuid from github, it reports 16 cores and 16 threads for the 8-core Ryzen. That's no change from earlier versions, but at least slightly better than what core.cpuid does. Thank you. I added another one fix that uses 1E extended leaf information to retrieve the number of threads per core. https://github.com/libmir/mir-cpuid/pull/42 Please check with recent the mir-cpuid master. -- |
May 30, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 Dlang Bot <dlang-bot@dlang.rocks> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |pull --- Comment #8 from Dlang Bot <dlang-bot@dlang.rocks> --- @rainers created dlang/druntime pull request #2620 "fix Issue 19861 - core.cpuid reports the wrong number of threads" fixing this issue: - fix Issue 19861 - core.cpuid reports the wrong number of threads do not use i7 detection on AMD processors use cpuid 0x8000_001E to detect the number of threads per core https://github.com/dlang/druntime/pull/2620 -- |
June 28, 2019 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 Dlang Bot <dlang-bot@dlang.rocks> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #9 from Dlang Bot <dlang-bot@dlang.rocks> --- dlang/druntime pull request #2620 "fix Issue 19861 - core.cpuid reports the wrong number of threads" was merged into stable: - 0723a38a858aaaae83a9c5c0d43a0400571ef2a0 by Rainer Schuetze: fix Issue 19861 - core.cpuid reports the wrong number of threads do not use i7 detection on AMD processors use cpuid 0x8000_001E to detect the number of threads per core https://github.com/dlang/druntime/pull/2620 -- |
May 17, 2020 [Issue 19861] core.cpuid reports the wrong number of threads | ||||
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https://issues.dlang.org/show_bug.cgi?id=19861 --- Comment #10 from Dlang Bot <dlang-bot@dlang.rocks> --- dlang/druntime pull request #3107 "[dmd-cxx] fix Issue 19861 - core.cpuid reports the wrong number of threads" was merged into dmd-cxx: - d989df32ae1645203ceb24ccfa62ddfd46f078d4 by Rainer Schuetze: fix Issue 19861 - core.cpuid reports the wrong number of threads do not use i7 detection on AMD processors use cpuid 0x8000_001E to detect the number of threads per core https://github.com/dlang/druntime/pull/3107 -- |
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