Fix export_to_cl_image issue in the fp16 GeMM implementation

- The issue affects Fp16 GeMM on Arm® Mali™-G78
- The issue was caused by a missing fallback implementation for the
case when export_to_cl_image cannot be used
- The new implementation fixes this issues and make the GeMM
implementation for M=1 also faster (4-5% on various networks with fully
connected at the end of the model)
- This patch also enables the H0=0 case in the GeMM examples

Resolves COMPMID-5812, COMPMID-5688, and COMPMID-6147

Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Change-Id: Ib7b355ae25337962598dd2ba21665b1a6b48686f
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/c/VisualCompute/ComputeLibrary/+/514664
Tested-by: bsgcomp <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Comments-Addressed: bsgcomp <bsgcomp@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9526
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/examples/gemm_tuner/cl_gemm_reshaped_rhs_only.cpp b/examples/gemm_tuner/cl_gemm_reshaped_rhs_only.cpp
index 79f251ae7d..0ad2a65dc2 100644
--- a/examples/gemm_tuner/cl_gemm_reshaped_rhs_only.cpp
+++ b/examples/gemm_tuner/cl_gemm_reshaped_rhs_only.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021 Arm Limited.
+ * Copyright (c) 2019-2021, 2023 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -225,6 +225,11 @@ public:
         kernel_info.broadcast_bias          = true;
         kernel_info.activation_info         = act_info;
 
+        if(rhs_info.h0 == 0)
+        {
+            rhs_info.h0 = std::max(kernel_info.n / rhs_info.n0, 1U);
+        }
+
         // Initialise rhs_reshaped tensor info
         rhs_reshaped.allocator()->init(TensorInfo(compute_rhs_reshaped_shape(*rhs.info(), rhs_info), 1, params.data_type));