Merge pull request #362 from firasj/cuda_write_imm

Support CUDA latency test with write w/ immediate verb

Author: sshaulnv

src/perftest_parameters.c

@@ -1955,9 +1955,9 @@ static void force_dependecies(struct perftest_parameters *user_param)
 		exit(1);
 	}
 
-	if (user_param->memory_type == MEMORY_CUDA && user_param->tst == LAT && (user_param->verb == WRITE || user_param->verb == WRITE_IMM)) {
+	if (user_param->memory_type == MEMORY_CUDA && user_param->tst == LAT && user_param->verb == WRITE) {
 		printf(RESULT_LINE);
-		fprintf(stderr,"Perftest supports CUDA latency tests with read/send verbs only\n");
+		fprintf(stderr, "Perftest doesn't support CUDA latency test with write (without immediate) verb\n");
 		exit(1);
 	}
 

src/perftest_resources.c

@@ -5222,7 +5222,6 @@ int run_iter_lat_write_imm(struct pingpong_context *ctx,struct perftest_paramete
 	uint64_t                rcnt = 0;
 	int                     ne = 0;
 	int			err = 0;
-	volatile char           *post_buf = NULL;
 
 	int 			size_per_qp = (user_param->use_srq) ?
 					user_param->rx_depth/user_param->num_of_qps : user_param->rx_depth;
@@ -5246,8 +5245,6 @@ int run_iter_lat_write_imm(struct pingpong_context *ctx,struct perftest_paramete
 		ctx->wr[0].send_flags |= IBV_SEND_INLINE;
 	}
 
-	post_buf = (char*)ctx->buf[0] + user_param->size - 1;
-
 	/* Duration support in latency tests. */
 	if (user_param->test_type == DURATION) {
 		duration_param=user_param;
@@ -5320,8 +5317,7 @@ int run_iter_lat_write_imm(struct pingpong_context *ctx,struct perftest_paramete
 			if (user_param->test_type == ITERATIONS)
 				user_param->tposted[scnt] = get_cycles();
 
-			*post_buf = (char)++scnt;
-
+			++scnt;
 			err = post_send_method(ctx, 0, user_param);
 
 			if (err) {