[ONCPUML-7] arm_compute support for ND parallelism

Currently 1D ranges of work are specified by the scheduler
via two integers, start and end.  This limit opportunities
for advance parallelism and scheduling

This patch expands the interfaces to allow for ND parallism.

`GemmCommon::get_window_size` now returns an `NDRange` specifying the work
in N-dimensions rather than with the single integer it used prior (1D)

Execute now takes an `NDCoordinate` which specifies an `NDRange` with a start
position for that work along with an `NDCoordinate` to specify the thread location

In addition to expanding the interface to enable this functionality,
we have added the capability to SGEMM when the number of threads is high
this has the effective of allowing a much greater degree of parallelism
where te problem dimension would previously have limited the number of threads.

Change-Id: I3e1a8b7276216627bec4ff6f24ac2147552ea9fb
Signed-off-by: Joseph Dobson <joseph.dobson@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/2962
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 27 insertions, 8 deletions

diff --git a/arm_compute/core/NEON/kernels/assembly/NEGEMMAssemblyWrapperKernel.h b/arm_compute/core/NEON/kernels/assembly/NEGEMMAssemblyWrapperKernel.h
index d612681c41..0e3dd74577 100644
--- a/arm_compute/core/NEON/kernels/assembly/NEGEMMAssemblyWrapperKernel.h
+++ b/arm_compute/core/NEON/kernels/assembly/NEGEMMAssemblyWrapperKernel.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2019 ARM Limited.
+ * Copyright (c) 2018-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -24,6 +24,7 @@
 #ifndef ARM_COMPUTE_ASSEMBLY_GEMM_KERNEL_WRAPPER_KERNEL_H
 #define ARM_COMPUTE_ASSEMBLY_GEMM_KERNEL_WRAPPER_KERNEL_H
 
+#include "arm_compute/core/NEON/kernels/assembly/arm_gemm_compute_iface.hpp"
 #include "arm_compute/core/NEON/INEKernel.h"
 #include "arm_compute/core/Utils.h"
 #include "arm_compute/core/Validate.h"
@@ -65,15 +66,33 @@ public:
     {
         return _name.c_str();
     }
-    // Inherited methods overridden:
+
+
     void run(const Window &window, const ThreadInfo &info) override
     {
         ARM_COMPUTE_ERROR_ON_NULLPTR((reinterpret_cast<void *>(_kernel)));
         ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
-        auto first = window.x().start();
-        auto last  = window.x().end();
-        _kernel->execute(first, last, info.thread_id);
+
+        auto win=arm_gemm::to_ndcoord(window);
+
+        arm_gemm::ndcoord_t thread_locator { };
+
+        _kernel->execute(win, thread_locator, info.thread_id);
     }
+
+    // Inherited methods overridden:
+    void run_nd(const Window &window, const ThreadInfo &info, const Window &thread_locator) override
+    {
+        ARM_COMPUTE_ERROR_ON_NULLPTR((reinterpret_cast<void *>(_kernel)));
+        ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
+
+        //convert between arm_compute and arm_gemm types
+        auto ndc_win = arm_gemm::to_ndcoord(window);
+        auto ndc_tlc = arm_gemm::to_ndcoord(thread_locator);
+
+        _kernel->execute(ndc_win, ndc_tlc, info.thread_id);
+    }
+
     /** Initialise the kernel's input and output.
      *
      * @param[in] kernel      Pointer to an assembly kernel implementation.
@@ -83,9 +102,9 @@ public:
     {
         ARM_COMPUTE_ERROR_ON_NULLPTR((reinterpret_cast<void *>(kernel)));
         _kernel         = kernel;
-        auto   win_last = _kernel->get_window_size();
-        Window win;
-        win.set(Window::DimX, Window::Dimension(0, win_last, 1));
+
+        Window win = to_window(kernel->get_window_size());
+
         INEKernel::configure(win);
 
         if(!kernel_name_tag.empty())