From 42be16a685336774d60affa3b77437baf45fdef2 Mon Sep 17 00:00:00 2001
From: Andreas Herten <a.herten@fz-juelich.de>
Date: Sat, 17 Jun 2023 14:32:38 +0200
Subject: [PATCH] Implement TODOs
---
02-MSA-hello-world-gpu/hello-world.c | 5 +++++
02-MSA-hello-world-gpu/hello-world.cu | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/02-MSA-hello-world-gpu/hello-world.c b/02-MSA-hello-world-gpu/hello-world.c
index 9d501bc..89fcd00 100644
--- a/02-MSA-hello-world-gpu/hello-world.c
+++ b/02-MSA-hello-world-gpu/hello-world.c
@@ -24,8 +24,13 @@ int main(int argc, char** argv){
const char *payload = "world!";
+ // TODO: Implement the MPI_Send call to send the six characters of "payload" to rank 1
if (rank == 0) {
+ #ifdef SOLUTION
MPI_Send(payload, 6, MPI_CHAR, 1, tag, MPI_COMM_WORLD);
+ #else
+ MPI_Send();
+ #endif
}
printf("\n");
diff --git a/02-MSA-hello-world-gpu/hello-world.cu b/02-MSA-hello-world-gpu/hello-world.cu
index da1b592..8c71020 100644
--- a/02-MSA-hello-world-gpu/hello-world.cu
+++ b/02-MSA-hello-world-gpu/hello-world.cu
@@ -51,8 +51,13 @@ int main(int argc, char** argv){
CUDA_RT_CALL( cudaPeekAtLastError() );
CUDA_RT_CALL( cudaDeviceSynchronize() );
+ // TODO: Implement the MPI_Recv() call to receive the "payload" from rank 1 using directly "d_payload" as the target buffer on the GPU
if (rank == 1) {
+ #ifdef SOLUTION
MPI_Recv(d_payload, 6, MPI_CHAR, 0, tag, MPI_COMM_WORLD, &stat);
+ #else
+ MPI_Recv();
+ #endif
}
hello<<<1, 1>>>(d_payload);
--
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