Assertion failure + check fail with Hyperthreading off

[digitalfrost84]

I have a 13700k, it can pass multiple runs and the Check always passes. However, if I change nothing else and just turn HT off this happens:

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Linpack Extended
https://github.com/BoringBoredom/Linpack-Extended

Start time: 15:06
Time to run: 60 minutes
Problem size: 39984
Leading dimension: 39984
Alignment value: 4
Residual checks: OFF



Current date/time: Tue Jul 30 15:06:50 2024

CPU frequency:    5.699 GHz
Number of CPUs: 1
Number of cores: 16
Number of threads: 16

Parameters are set to:

Number of tests: 1
Number of equations to solve (problem size) : 39984
Leading dimension of array                  : 39984
Number of trials to run                     : 99999
Data alignment value (in Kbytes)            : 4

Maximum memory requested that can be used=12790565824, at the size=39984

=================== Timing linear equation system solver ===================

Size   LDA    Align. Time(s)    GFlops   Residual     Residual(norm) Check
39984  39984  4      77.962     546.6607 5.981812e+06 8.405604e+06   FAIL
OMP: Error #13: Assertion failure at kmp_dispatch.cpp(2430).
OMP: Hint Please submit a bug report with this message, compile and run commands used, and machine configuration info including native compiler and operating system versions. Faster response will be obtained by including all program sources. For information on submitting this issue, please see http://www.intel.com/software/products/support/.

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HT ON:

Waiting for 0 seconds, press a key to continue ...
Linpack Extended
https://github.com/BoringBoredom/Linpack-Extended

Start time: 15:12
Time to run: 60 minutes
Problem size: 39984
Leading dimension: 39984
Alignment value: 4
Residual checks: OFF



Current date/time: Tue Jul 30 15:12:31 2024

CPU frequency:    5.092 GHz
Number of CPUs: 1
Number of cores: 16
Number of threads: 16

Parameters are set to:

Number of tests: 1
Number of equations to solve (problem size) : 39984
Leading dimension of array                  : 39984
Number of trials to run                     : 99999
Data alignment value (in Kbytes)            : 4

Maximum memory requested that can be used=12790565824, at the size=39984

=================== Timing linear equation system solver ===================

Size   LDA    Align. Time(s)    GFlops   Residual     Residual(norm) Check
39984  39984  4      99.436     428.6041 1.522955e-09 3.303880e-02   pass
39984  39984  4      78.046     546.0739 1.252387e-09 2.716914e-02   pass

[digitalfrost84]

Setting KMP_AFFINITY empty seems to fix it.