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Increase blocksize for AMD server in DYNAMIC_ARCH only if CORETYPE matches AVX512 #6027

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Merged
martin-frbg merged 2 commits into from
Sep 13, 2026
+4 −1
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Increase blocksize for AMD server in DYNAMIC_ARCH only if CORETYPE matches AVX512 #6027

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a78196c
Only change the blocksize for AMD server if coretype was not overridd…
martin-frbg Sep 12, 2026
0302a53
Declare openblas_corename
martin-frbg Sep 12, 2026
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5 changes: 4 additions & 1 deletion kernel/setparam-ref.c
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@
#include <stdio.h>
#include <string.h>
#include "common.h"
extern char* gotoblas_corename(void);

#ifdef BUILD_KERNEL
#include "kernelTS.h"
Expand Down Expand Up @@ -2119,7 +2120,8 @@ static void init_parameter(void) {
cpuid(0, &eax, &ebx, &ecx, &edx);

if ((ebx == 0x68747541) && (l3_kb > 0) && (l3_kb % 32768 == 0) && (l2_kb == 1024)) { //Auth AMD

if (strcmp(gotoblas_corename(), "cooperlake") == 0 || strcmp(gotoblas_corename(), "skylakex") == 0 || strcmp(gotoblas_corename(), "sapphirerapids") == 0) {

cpuid(7, &cpuid7_eax, &cpuid7_ebx, &cpuid7_ecx, &cpuid7_edx);

if (cpuid7_ebx & (1 << 16)) { // avx512 - Zen 4, 5
Expand All @@ -2141,6 +2143,7 @@ static void init_parameter(void) {
#endif
}
}
}
}
#endif

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