Oren,
I have a small change to rdma_lat.c I'd like to get in ofed-1.3. It adds
a new option to allow specifying the max inline size, which is currently
hard-coded to 400. 400 is too big for chelsio devices. Adding a command
line option will allow the user to specify a different value.
Tziporet, can we pull this for ofed-1.3?
Thanks,
Steve.
--------------
rdma_lat: Add -m --max-inline option to support devices with different
inline max values.
Currently the max inline value is hard-coded and too big for the
chelsio device. This patch allows specifying the max inline as a
command line param.
Signed-off-by: Steve Wise <[EMAIL PROTECTED]>
---
rdma_lat.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/rdma_lat.c b/rdma_lat.c
index 68c9120..f82cbcd 100755
--- a/rdma_lat.c
+++ b/rdma_lat.c
@@ -60,6 +60,7 @@
#define PINGPONG_RDMA_WRID 3
#define MAX_INLINE 400
+static int max_inline = MAX_INLINE;
static int page_size;
static pid_t pid;
@@ -603,7 +604,7 @@ static struct pingpong_context *pp_init_ctx(void *ptr,
struct pp_data *data)
.max_recv_wr = 1,
.max_send_sge = 1,
.max_recv_sge = 1,
- .max_inline_data = MAX_INLINE
+ .max_inline_data = max_inline
},
.qp_type = IBV_QPT_RC
};
@@ -915,6 +916,7 @@ static void usage(const char *argv0)
printf(" -s, --size=<size> size of message to exchange (default
1)\n");
printf(" -t, --tx-depth=<dep> size of tx queue (default 50)\n");
printf(" -n, --iters=<iters> number of exchanges (at least 2,
default 1000)\n");
+ printf(" -m, --max-inline=<max-inline> max size for inline data
(default 400 bytes)\n");
printf(" -C, --report-cycles report times in cpu cycle units
(default microseconds)\n");
printf(" -H, --report-histogram print out all results (default print
summary only)\n");
printf(" -U, --report-unsorted (implies -H) print out unsorted
results (default sorted)\n");
@@ -1036,6 +1038,7 @@ int main(int argc, char *argv[])
{ .name = "size", .has_arg = 1, .val = 's' },
{ .name = "iters", .has_arg = 1, .val = 'n' },
{ .name = "tx-depth", .has_arg = 1, .val = 't' },
+ { .name = "max-inline", .has_arg = 1, .val = 'm' },
{ .name = "report-cycles", .has_arg = 0, .val = 'C' },
{ .name = "report-histogram",.has_arg = 0, .val = 'H' },
{ .name = "report-unsorted",.has_arg = 0, .val = 'U' },
@@ -1043,7 +1046,7 @@ int main(int argc, char *argv[])
{ 0 }
};
- c = getopt_long(argc, argv, "p:d:i:s:n:t:CHUc", long_options,
NULL);
+ c = getopt_long(argc, argv, "p:d:i:s:n:t:m:CHUc", long_options,
NULL);
if (c == -1)
break;
@@ -1087,6 +1090,10 @@ int main(int argc, char *argv[])
break;
+ case 'm':
+ max_inline = strtol(optarg, NULL, 0);
+ break;
+
case 'C':
report.cycles = 1;
break;
@@ -1192,7 +1199,7 @@ int main(int argc, char *argv[])
ctx->wr.sg_list = &ctx->list;
ctx->wr.num_sge = 1;
ctx->wr.opcode = IBV_WR_RDMA_WRITE;
- if (ctx->size > MAX_INLINE || ctx->size == 0) {
+ if (ctx->size > max_inline || ctx->size == 0) {
ctx->wr.send_flags = IBV_SEND_SIGNALED;
} else {
ctx->wr.send_flags = IBV_SEND_SIGNALED | IBV_SEND_INLINE;
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