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libgomp nvptx plugin: Debugging output for cuInit failure
- From: Thomas Schwinge <thomas at codesourcery dot com>
- To: <gcc-patches at gcc dot gnu dot org>, Jakub Jelinek <jakub at redhat dot com>
- Date: Mon, 22 May 2017 14:57:24 +0200
- Subject: libgomp nvptx plugin: Debugging output for cuInit failure
- Authentication-results: sourceware.org; auth=none
Hi!
OK for trunk?
commit 7b2f06b7d2fd23b20d81fda8be6ec7453e8b3fe3
Author: Thomas Schwinge <thomas@codesourcery.com>
Date: Thu Dec 22 08:30:04 2016 +0100
libgomp nvptx plugin: Debugging output for cuInit failure
libgomp/
* plugin/plugin-nvptx.c (nvptx_get_num_devices): Debugging output
for cuInit failure.
---
libgomp/plugin/plugin-nvptx.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git libgomp/plugin/plugin-nvptx.c libgomp/plugin/plugin-nvptx.c
index 3ef48dd..0e1b3e2 100644
--- libgomp/plugin/plugin-nvptx.c
+++ libgomp/plugin/plugin-nvptx.c
@@ -838,7 +838,11 @@ nvptx_get_num_devices (void)
/* PR libgomp/65099: Currently, we only support offloading in 64-bit
configurations. */
if (sizeof (void *) != 8)
- return 0;
+ {
+ GOMP_PLUGIN_debug (0, "Disabling nvptx offloading;"
+ " only 64-bit configurations are supported\n");
+ return 0;
+ }
/* This function will be called before the plugin has been initialized in
order to enumerate available devices, but CUDA API routines can't be used
@@ -852,7 +856,11 @@ nvptx_get_num_devices (void)
/* This is not an error: e.g. we may have CUDA libraries installed but
no devices available. */
if (r != CUDA_SUCCESS)
- return 0;
+ {
+ GOMP_PLUGIN_debug (0, "Disabling nvptx offloading; cuInit: %s\n",
+ cuda_error (r));
+ return 0;
+ }
}
CUDA_CALL_ERET (-1, cuDeviceGetCount, &n);
Grüße
Thomas