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add patch for FlexiBLAS v3.2.1 to fix LAPACK errors triggered by -ftree-vectorize on zen4/zen5 microarchs #23994

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add patch for FlexiBLAS v3.2.1 to fix LAPACK errors triggered by -ftree-vectorize on zen4/zen5 microarchs #23994

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7 changes: 6 additions & 1 deletion easybuild/easyconfigs/f/FlexiBLAS/FlexiBLAS-3.2.1-GCC-12.2.0.eb
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Expand Up @@ -37,7 +37,12 @@ components = [
(name, version, {
'source_urls': ['https://github.com/mpimd-csc/flexiblas/releases/download/v%(version)s/'],
'sources': [SOURCELOWER_TAR_GZ],
'checksums': ['5be7e508e2dbb751b3bf372639d8e82a11f79e9ef6cbf243b64981c24a5703cf'],
'patches': ['FlexiBLAS-3.2.1_fix-zgbtrf-vectorizer-compilation.patch'],
'checksums': [
'5be7e508e2dbb751b3bf372639d8e82a11f79e9ef6cbf243b64981c24a5703cf', # flexiblas-3.2.1.tar.gz
'8814a134331fb7734c47bb5b9bb9f16d4294a379b41ab084640dcdabbf09c79c',
# FlexiBLAS-3.2.1_fix-zgbtrf-vectorizer-compilation.patch
],
'backends': local_backends,
}),
('LAPACK', '3.10.1', {
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25 changes: 25 additions & 0 deletions easybuild/easyconfigs/f/FlexiBLAS/FlexiBLAS-3.2.1_fix-zgbtrf-vectorizer-compilation.patch
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@@ -0,0 +1,25 @@
# make some work matrices allocatable to bypass errors generated by -ftree-vectorize with gcc 12.x on zen4/zen5
# author: Bart Oldeman (Digital Research Alliance of Canada)
diff -ur flexiblas-3.2.1.orig/contributed/lapack-3.10.1/SRC/zgbtrf.f flexiblas-3.2.1/contributed/lapack-3.10.1/SRC/zgbtrf.f
--- flexiblas-3.2.1.orig/contributed/lapack-3.10.1/SRC/zgbtrf.f 2023-04-03 14:07:31.000000000 +0000
+++ flexiblas-3.2.1/contributed/lapack-3.10.1/SRC/zgbtrf.f 2025-09-24 15:29:42.138091646 +0000
@@ -169,8 +169,8 @@
COMPLEX*16 TEMP
* ..
* .. Local Arrays ..
- COMPLEX*16 WORK13( LDWORK, NBMAX ),
- $ WORK31( LDWORK, NBMAX )
+ COMPLEX*16, ALLOCATABLE :: WORK13( :, : ),
+ $ WORK31( :, : )
* ..
* .. External Functions ..
INTEGER ILAENV, IZAMAX
@@ -232,6 +232,8 @@
*
* Use blocked code
*
+ ALLOCATE(WORK13(LDWORK, NBMAX), WORK31(LDWORK, NBMAX))
+*
* Zero the superdiagonal elements of the work array WORK13
*
DO 20 J = 1, NB