X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/927524f1be454de021180b74999d682780b8cb6b..d75310b342941005e469c6d087fe368dd03e268e:/lib/crunchrun/singularity.go

diff --git a/lib/crunchrun/singularity.go b/lib/crunchrun/singularity.go
index cda10aa611..64a3773250 100644
--- a/lib/crunchrun/singularity.go
+++ b/lib/crunchrun/singularity.go
@@ -284,6 +284,15 @@ func (e *singularityExecutor) execCmd(path string) *exec.Cmd {
 		env = append(env, "SINGULARITYENV_"+k+"="+v)
 	}
 
+	// Singularity always makes all nvidia devices visible to the
+	// container.  If a resource manager such as slurm or LSF told
+	// us to select specific devices we need to propagate that.
+	if cudaVisibleDevices := os.Getenv("CUDA_VISIBLE_DEVICES"); cudaVisibleDevices != "" {
+		// If a resource manager such as slurm or LSF told
+		// us to select specific devices we need to propagate that.
+		env = append(env, "SINGULARITYENV_CUDA_VISIBLE_DEVICES="+cudaVisibleDevices)
+	}
+
 	args = append(args, e.imageFilename)
 	args = append(args, e.spec.Command...)