Hi!
On 2021-05-26T14:06:53+0200, Jakub Jelinek via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
> When gcc is configured for nvptx offloading [...]
> and full CUDA isn't installed, many libgomp.oacc-*/* tests fail,
> some of them because cuda.h header can't be found, others because
> the tests can't be linked against -lcuda, -lcudart or -lcublas.
> I usually only have akmod-nvidia and xorg-x11-drv-nvidia-cuda rpms
> installed, so libcuda.so.1 can be dlopened and the offloading works,
> but linking against those libraries isn't possible nor are the
> headers around [...]
> The following patch adds 3 new effective targets and uses them in tests that
> needs those.
> --- libgomp/testsuite/lib/libgomp.exp.jj 2021-05-25 13:43:02.800121273
> +0200
> +++ libgomp/testsuite/lib/libgomp.exp 2021-05-26 12:18:56.562556244 +0200
> +# Return 1 if cuda.h and -lcuda are available.
> +
> +proc check_effective_target_openacc_cuda { } {
> + return [check_no_compiler_messages openacc_cuda executable {
> +#include <cuda.h>
> +[...]
> +} } "-lcuda" ]
> +}
> +
> +# Return 1 if cublas_v2.h and -lcublas are available.
> +
> +proc check_effective_target_openacc_cublas { } {
> + return [check_no_compiler_messages openacc_cublas executable {
> +#include <cuda.h>
> +#include <cublas_v2.h>
> +[...]
> +} } "-lcuda -lcublas" ]
> +}
> +
> +# Return 1 if cuda_runtime_api.h and -lcudart are available.
> +
> +proc check_effective_target_openacc_cudart { } {
> + return [check_no_compiler_messages openacc_cudart executable {
> +#include <cuda.h>
> +#include <cuda_runtime_api.h>
> +[...]
> +} } "-lcuda -lcudart" ]
> +}
OK to push the attached
"libgomp C++ testsuite: Use 'lang_include_flags' instead of
'libstdcxx_includes'"?
This does not adjust the 'libstdcxx_includes' usage in libitm and libvtv
testsuites -- maybe those should also get 'lang_include_flags' ported
(separately)?
Grüße
Thomas
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>From 9bb4ffee6932ee5f917344535026f75c3eadc093 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <tho...@codesourcery.com>
Date: Thu, 4 May 2023 09:07:35 +0200
Subject: [PATCH] libgomp C++ testsuite: Use 'lang_include_flags' instead of
'libstdcxx_includes'
With nvptx offloading configured, and supported, and CUDA available:
$ make check-target-libgomp RUNTESTFLAGS="--all c.exp=context-1.c c++.exp=context-1.c"
[...]
Running [...]/libgomp.oacc-c/c.exp ...
PASS: libgomp.oacc-c/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O0 (test for excess errors)
PASS: libgomp.oacc-c/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O0 execution test
PASS: libgomp.oacc-c/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O2 (test for excess errors)
PASS: libgomp.oacc-c/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O2 execution test
UNSUPPORTED: libgomp.oacc-c/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable -O2
Running [...]/libgomp.oacc-c++/c++.exp ...
PASS: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O0 (test for excess errors)
PASS: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O0 execution test
PASS: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O2 (test for excess errors)
PASS: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O2 execution test
UNSUPPORTED: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable -O2
[...]
..., but for 'c++.exp=context-1.c' alone, we currently get all-UNSUPPORTED:
$ make check-target-libgomp RUNTESTFLAGS_="--all c++.exp=context-1.c"
[...]
Running [...]/libgomp.oacc-c++/c++.exp ...
UNSUPPORTED: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O0
UNSUPPORTED: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none -O2
UNSUPPORTED: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/context-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable -O2
[...]
That is, if 'c.exp' executes first, it does successfully evaluate
'dg-require-effective-target openacc_cublas' -- and does cache this result (so
it isn't reevaluated for 'c++.exp'). However, for 'c++.exp' alone (that is,
without the 'c.exp' result cached), we run into:
spawn -ignore SIGHUP [xgcc] [...] -x c++ openacc_cublas2311907.c [...]
In file included from /usr/include/cuda_fp16.h:3673,
from /usr/include/cublas_api.h:75,
from /usr/include/cublas_v2.h:65,
from openacc_cublas2311907.c:3:
/usr/include/cuda_fp16.hpp:67:10: fatal error: utility: No such file or directory
We're missing include paths to C++/libstdc++ build-tree headers.
Fix this by using the mechanism introduced for Fortran in
r212268 (commit f707da16f714f7fe5a42391748212c84dfec639b) re
"libgomp.fortran/fortran.exp - add -fintrinsic-modules-path ${blddir}".
libgomp/
* testsuite/libgomp.c++/c++.exp: Use 'lang_include_flags' instead
of 'libstdcxx_includes'.
* testsuite/libgomp.oacc-c++/c++.exp: Likewise.
---
libgomp/testsuite/libgomp.c++/c++.exp | 7 +++----
libgomp/testsuite/libgomp.oacc-c++/c++.exp | 7 +++----
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/libgomp/testsuite/libgomp.c++/c++.exp b/libgomp/testsuite/libgomp.c++/c++.exp
index f4884e2ffa7..5b9a5924ff3 100644
--- a/libgomp/testsuite/libgomp.c++/c++.exp
+++ b/libgomp/testsuite/libgomp.c++/c++.exp
@@ -66,13 +66,12 @@ if { $lang_test_file_found } {
set flags_file "${blddir}/../libstdc++-v3/scripts/testsuite_flags"
if { [file exists $flags_file] } {
- set libstdcxx_includes [exec sh $flags_file --build-includes]
- } else {
- set libstdcxx_includes ""
+ set lang_source_re {^.*\.[cC]$}
+ set lang_include_flags [exec sh $flags_file --build-includes]
}
# Main loop.
- dg-runtest $tests "" "$libstdcxx_includes $DEFAULT_CFLAGS"
+ dg-runtest $tests "" $DEFAULT_CFLAGS
}
# See above.
diff --git a/libgomp/testsuite/libgomp.oacc-c++/c++.exp b/libgomp/testsuite/libgomp.oacc-c++/c++.exp
index 42e0395f9a5..0b235ba47f3 100644
--- a/libgomp/testsuite/libgomp.oacc-c++/c++.exp
+++ b/libgomp/testsuite/libgomp.oacc-c++/c++.exp
@@ -72,9 +72,8 @@ if { $lang_test_file_found } {
set flags_file "${blddir}/../libstdc++-v3/scripts/testsuite_flags"
if { [file exists $flags_file] } {
- set libstdcxx_includes [exec sh $flags_file --build-includes]
- } else {
- set libstdcxx_includes ""
+ set lang_source_re {^.*\.[cC]$}
+ set lang_include_flags [exec sh $flags_file --build-includes]
}
# Test with all available offload targets, and with offloading disabled.
@@ -147,7 +146,7 @@ if { $lang_test_file_found } {
}
}
- gcc-dg-runtest $tests "$tagopt" "$libstdcxx_includes"
+ gcc-dg-runtest $tests "$tagopt" ""
}
unset offload_target
} else {
--
2.34.1
