MKLDNN elementwise_mul: Move Kernel to KernelPool to avoid segfaults

test=develop

Author: Sand3r-

paddle/fluid/operators/elementwise_mul_mkldnn_op.cc renamed to paddle/fluid/operators/elementwise/elementwise_mul_mkldnn_op.cc

@@ -13,61 +13,21 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include <mkldnn/include/mkldnn.hpp>
-#include "paddle/fluid/operators/elementwise_op.h"
-#include "paddle/fluid/operators/elementwise_op_function.h"
+#include "paddle/fluid/operators/elementwise/elementwise_op.h"
+#include "paddle/fluid/operators/elementwise/elementwise_op_function.h"
 
 #include "paddle/fluid/platform/mkldnn_helper.h"
 
-#include "xbyak/xbyak.h"
-#include "xbyak/xbyak_util.h"
+#include "paddle/fluid/operators/math/jit_kernel.h"
+#include "xbyak.h"
+#include "xbyak_util.h"
 
 namespace paddle {
 namespace operators {
 
 using framework::DataLayout;
 using mkldnn::memory;
 
-struct vector_mul : public Xbyak::CodeGenerator {
-  vector_mul() {
-    // RDI is ptr X
-    // RSI is ptr Y
-    // RDX is ptr Z
-    // RCX is h
-    // r8 is w
-
-    push(rbx);
-
-    xor_(rax, rax);
-    xor_(r10, r10);
-    vmovups(zmm3, ptr[rsi]);
-
-    L("h_loop");
-    xor_(rbx, rbx);
-    L("w_loop");
-    vmovups(zmm2, ptr[rdi + rax]);
-    vmulps(zmm1, zmm2, zmm3);
-    vmovups(ptr[rdx + rax], zmm1);
-    add(rax, 64);
-    inc(rbx);
-    cmp(r8, rbx);
-    jnz("w_loop");
-    inc(r10);
-    cmp(r10, rcx);
-    jnz("h_loop");
-
-    pop(rbx);
-    ret();
-  }
-};
-
-void check(const float* x, const float* y, float* z, int w) {
-  for (int wi = 0; wi < w; wi++) {
-    for (int i = 0; i < 16; i++) {
-      z[wi * 16 + i] = x[wi * 16 + i] * y[i];
-    }
-  }
-}
-
 static mkldnn::memory::format StringToMKLDNNFormat(std::string& format) {
   std::transform(format.begin(), format.end(), format.begin(), ::tolower);
 
@@ -163,12 +123,9 @@ class ElementwiseMulMKLDNNKernel : public framework::OpKernel<T> {
         constexpr int simd_width = 16;
         int C = c / simd_width;
 
-        vector_mul mul;
-
-        using mul_func_t =
-            void (*)(const float*, const float*, float*, int, int);
-
-        mul_func_t mul_func = (mul_func_t)mul.getCode();
+        const auto& multiply =
+            math::jitkernel::KernelPool::Instance()
+                .template Get<math::jitkernel::EltwiseMulnChw16cNCKernel<T>>(n);
 
 #pragma omp parallel for collapse(2)
         for (int ni = 0; ni < n; ni++) {
@@ -180,7 +137,7 @@ class ElementwiseMulMKLDNNKernel : public framework::OpKernel<T> {
             auto ptr_z =
                 z_data + ni * C * h * w * simd_width + ci * h * w * simd_width;
 
-            mul_func(ptr_x, ptr_y, ptr_z, h, w);
+            multiply->Compute(ptr_x, ptr_y, ptr_z, h, w);
           }
         }
       }

paddle/fluid/operators/math/jit_code.h

@@ -156,6 +156,42 @@ class VActJitCode : public JitCode {
   ymm_t ymm_dst = ymm_t(1);
 };
 
+#ifdef PADDLE_WITH_MKLDNN
+struct EltwiseMulnChw16cNC : public Xbyak::CodeGenerator {
+  explicit EltwiseMulnChw16cNC(size_t code_size = 256 * 1024)
+      : Xbyak::CodeGenerator(code_size) {
+    // RDI is ptr x_input
+    // RSI is ptr y_input
+    // RDX is ptr output
+    // RCX is height
+    // r8 is width
+
+    push(rbx);
+
+    xor_(rax, rax);
+    xor_(r10, r10);
+    vmovups(zmm3, ptr[rsi]);
+
+    L("h_loop");
+    xor_(rbx, rbx);
+    L("w_loop");
+    vmovups(zmm2, ptr[rdi + rax]);
+    vmulps(zmm1, zmm2, zmm3);
+    vmovups(ptr[rdx + rax], zmm1);
+    add(rax, 64);
+    inc(rbx);
+    cmp(r8, rbx);
+    jnz("w_loop");
+    inc(r10);
+    cmp(r10, rcx);
+    jnz("h_loop");
+
+    pop(rbx);
+    ret();
+  }
+};
+#endif
+
 }  // namespace gen
 }  // namespace jitkernel
 }  // namespace math

paddle/fluid/operators/math/jit_kernel.h

@@ -94,6 +94,15 @@ class VAddBiasKernel : public Kernel {
   void (*Compute)(const T *, const T *, T *, int);
 };
 
+#ifdef PADDLE_WITH_MKLDNN
+template <typename T>
+class EltwiseMulnChw16cNCKernel : public Kernel {
+ public:
+  // nChw16c = nChw16c .* NC
+  void (*Compute)(const float *, const float *, float *, int, int);
+};
+#endif
+
 template <typename T>
 class VActKernel : public Kernel {
  public:

paddle/fluid/operators/math/jit_kernel_blas.cc

@@ -226,6 +226,44 @@ bool VAddKernelImpl<double>::useMKL(int d) {
 }
 #endif
 
+#ifdef PADDLE_WITH_MKLDNN
+/* EltwiseMul for nChw16c & NC inputs JitKernel */
+template <typename T>
+class EltwiseMulnChw16cNCKernelImpl
+    : public math::jitkernel::EltwiseMulnChw16cNCKernel<T> {
+ public:
+  JITKERNEL_DECLARE_STATIC_FUNC;
+  explicit EltwiseMulnChw16cNCKernelImpl(int d)
+      : EltwiseMulnChw16cNCKernel<T>() {
+    using mul_func_t = void (*)(const float*, const float*, float*, int, int);
+#ifdef PADDLE_WITH_XBYAK
+    if (useJIT(d)) {
+      // roughly estimate the size of code
+      size_t sz = 96 + d / YMM_FLOAT_BLOCK * 4 * 8;
+      sz = sz > 4096 ? sz : 4096;
+      jitcode_.reset(new gen::EltwiseMulnChw16cNC(sz));
+      this->Compute = (mul_func_t)jitcode_->getCode();
+      return;
+    }
+#endif
+    PADDLE_THROW(
+        "This kernel shouldn't be used in Non-Xbyak, Non-MKL-DNN "
+        "environemnt");
+  }
+
+#ifdef PADDLE_WITH_XBYAK
+
+ private:
+  std::unique_ptr<gen::EltwiseMulnChw16cNC> jitcode_{nullptr};
+};
+
+template <>
+bool EltwiseMulnChw16cNCKernelImpl<float>::useJIT(int d) {
+  return true;
+}
+#endif
+#endif
+
 /* VAddRelu JitKernel */
 template <typename T>
 class VAddReluKernelImpl : public VAddReluKernel<T> {
@@ -394,6 +432,9 @@ REGISTER_JITKERNEL(vscal, VScalKernel);
 REGISTER_JITKERNEL(vaddbias, VAddBiasKernel);
 REGISTER_JITKERNEL(vrelu, VReluKernel);
 REGISTER_JITKERNEL(videntity, VIdentityKernel);
+#ifdef PADDLE_WITH_MKLDNN
+REGISTER_JITKERNEL(eltwise_mul_nchw16c, EltwiseMulnChw16cNCKernel);
+#endif
 
 }  // namespace jitkernel
 }  // namespace math