From 78672bd8fdff27789807b81d787202d3b8c3887a Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Wed, 24 May 2017 08:59:05 +0200
Subject: [PATCH] libgomp nvptx plugin: Debugging output when disabling nvptx
offloading
libgomp/
* plugin/plugin-nvptx.c (nvptx_get_num_devices): Debugging output
when disabling nvptx offloading.
From-SVN: r248400
---
libgomp/ChangeLog | 5 +++++
libgomp/plugin/plugin-nvptx.c | 12 ++++++++++--
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 32f8bf10b2b7..14e95ef9ba92 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,8 @@
+2017-05-24 Thomas Schwinge <thomas@codesourcery.com>
+
+ * plugin/plugin-nvptx.c (nvptx_get_num_devices): Debugging output
+ when disabling nvptx offloading.
+
2017-05-23 Thomas Schwinge <thomas@codesourcery.com>
* testsuite/libgomp.oacc-c-c++-common/kernels-loop-2.c: Update.
diff --git a/libgomp/plugin/plugin-nvptx.c b/libgomp/plugin/plugin-nvptx.c
index 3ef48dd5d82e..0e1b3e2d4f3f 100644
--- a/libgomp/plugin/plugin-nvptx.c
+++ b/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);
--
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