diff options
| author | Yang Rong <rong.r.yang@intel.com> | 2014-11-19 13:20:41 +0800 |
|---|---|---|
| committer | Zhigang Gong <zhigang.gong@intel.com> | 2014-11-21 13:36:30 +0800 |
| commit | 34a91f258aa0e0a8004a1019647efa245b28fc5e (patch) | |
| tree | 8c17e7fe784145cee26eab5d70c49c6bf0434d45 /src | |
| parent | 6fd5b39a18153be70d8cf22a115973188da4829a (diff) | |
BDW: Change the default tiling mode to TILING_Y on BDW.
TILING_Y's performance is better than TILING_X'S on BDW, but almost same
on IVB/HSW. Using the TILING_Y as default tiling mode temporary, still need
to find out the root cause why different behavior between BDW and IVB/HSW.
V2: still using static and only initialize once.
Signed-off-by: Yang Rong <rong.r.yang@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cl_mem.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/cl_mem.c b/src/cl_mem.c index d60c59b5..3323897b 100644 --- a/src/cl_mem.c +++ b/src/cl_mem.c @@ -637,11 +637,15 @@ cl_mem_copy_image(struct _cl_mem_image *image, cl_mem_unmap_auto((cl_mem)image); } -cl_image_tiling_t cl_get_default_tiling(void) +cl_image_tiling_t cl_get_default_tiling(cl_driver drv) { static int initialized = 0; static cl_image_tiling_t tiling = CL_TILE_X; + if (!initialized) { + // FIXME, need to find out the performance diff's root cause on BDW. + if(cl_driver_get_ver(drv) == 8) + tiling = CL_TILE_Y; char *tilingStr = getenv("OCL_TILING"); if (tilingStr != NULL) { switch (tilingStr[0]) { @@ -733,7 +737,7 @@ _cl_mem_new_image(cl_context ctx, /* Pick up tiling mode (we do only linear on SNB) */ if (cl_driver_get_ver(ctx->drv) != 6) - tiling = cl_get_default_tiling(); + tiling = cl_get_default_tiling(ctx->drv); depth = 1; } else if (image_type == CL_MEM_OBJECT_IMAGE3D || @@ -743,7 +747,7 @@ _cl_mem_new_image(cl_context ctx, h = 1; tiling = CL_NO_TILE; } else if (cl_driver_get_ver(ctx->drv) != 6) - tiling = cl_get_default_tiling(); + tiling = cl_get_default_tiling(ctx->drv); size_t min_pitch = bpp * w; if (data && pitch == 0) |