forked from ggerganov/llama.cpp
-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
cmake : MSVC instruction detection (fixed up ggerganov#809) (ggergano…
…v#3923) * Add detection code for avx * Only check hardware when option is ON * Modify per code review sugguestions * Build locally will detect CPU * Fixes CMake style to use lowercase like everywhere else * cleanup * fix merge * linux/gcc version for testing * msvc combines avx2 and fma into /arch:AVX2 so check for both * cleanup * msvc only version * style * Update FindSIMD.cmake --------- Co-authored-by: Howard Su <[email protected]> Co-authored-by: Jeremy Dunn <[email protected]>
- Loading branch information
1 parent
a7fac01
commit c41ea36
Showing
2 changed files
with
106 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,100 @@ | ||
include(CheckCSourceRuns) | ||
|
||
set(AVX_CODE " | ||
#include <immintrin.h> | ||
int main() | ||
{ | ||
__m256 a; | ||
a = _mm256_set1_ps(0); | ||
return 0; | ||
} | ||
") | ||
|
||
set(AVX512_CODE " | ||
#include <immintrin.h> | ||
int main() | ||
{ | ||
__m512i a = _mm512_set_epi8(0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0, | ||
0, 0, 0, 0, 0, 0, 0, 0); | ||
__m512i b = a; | ||
__mmask64 equality_mask = _mm512_cmp_epi8_mask(a, b, _MM_CMPINT_EQ); | ||
return 0; | ||
} | ||
") | ||
|
||
set(AVX2_CODE " | ||
#include <immintrin.h> | ||
int main() | ||
{ | ||
__m256i a = {0}; | ||
a = _mm256_abs_epi16(a); | ||
__m256i x; | ||
_mm256_extract_epi64(x, 0); // we rely on this in our AVX2 code | ||
return 0; | ||
} | ||
") | ||
|
||
set(FMA_CODE " | ||
#include <immintrin.h> | ||
int main() | ||
{ | ||
__m256 acc = _mm256_setzero_ps(); | ||
const __m256 d = _mm256_setzero_ps(); | ||
const __m256 p = _mm256_setzero_ps(); | ||
acc = _mm256_fmadd_ps( d, p, acc ); | ||
return 0; | ||
} | ||
") | ||
|
||
macro(check_sse type flags) | ||
set(__FLAG_I 1) | ||
set(CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS}) | ||
foreach (__FLAG ${flags}) | ||
if (NOT ${type}_FOUND) | ||
set(CMAKE_REQUIRED_FLAGS ${__FLAG}) | ||
check_c_source_runs("${${type}_CODE}" HAS_${type}_${__FLAG_I}) | ||
if (HAS_${type}_${__FLAG_I}) | ||
set(${type}_FOUND TRUE CACHE BOOL "${type} support") | ||
set(${type}_FLAGS "${__FLAG}" CACHE STRING "${type} flags") | ||
endif() | ||
math(EXPR __FLAG_I "${__FLAG_I}+1") | ||
endif() | ||
endforeach() | ||
set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE}) | ||
|
||
if (NOT ${type}_FOUND) | ||
set(${type}_FOUND FALSE CACHE BOOL "${type} support") | ||
set(${type}_FLAGS "" CACHE STRING "${type} flags") | ||
endif() | ||
|
||
mark_as_advanced(${type}_FOUND ${type}_FLAGS) | ||
endmacro() | ||
|
||
# flags are for MSVC only! | ||
check_sse("AVX" " ;/arch:AVX") | ||
if (NOT ${AVX_FOUND}) | ||
set(LLAMA_AVX OFF) | ||
else() | ||
set(LLAMA_AVX ON) | ||
endif() | ||
|
||
check_sse("AVX2" " ;/arch:AVX2") | ||
check_sse("FMA" " ;/arch:AVX2") | ||
if ((NOT ${AVX2_FOUND}) OR (NOT ${FMA_FOUND})) | ||
set(LLAMA_AVX2 OFF) | ||
else() | ||
set(LLAMA_AVX2 ON) | ||
endif() | ||
|
||
check_sse("AVX512" " ;/arch:AVX512") | ||
if (NOT ${AVX512_FOUND}) | ||
set(LLAMA_AVX512 OFF) | ||
else() | ||
set(LLAMA_AVX512 ON) | ||
endif() |