test-quantize: fix for q8_0 intermediates

Author: unbounded

tests/test-quantize-fns.cpp

@@ -12,7 +12,6 @@
 
 const float MAX_QUANTIZATION_REFERENCE_ERROR = 0.0001;
 const float MAX_QUANTIZATION_TOTAL_ERROR = 0.002;
-// TODO: check why q4_1 is high
 const float MAX_DOT_PRODUCT_ERROR = 0.02;
 
 const char* RESULT_STR[] = {"ok", "FAILED"};
@@ -71,10 +70,10 @@ float dot_product(const float * a1, const float * a2, size_t test_size) {
 // Total dot product error
 float dot_product_error(quantize_fns_t & qfns, size_t test_size, const float * test_data1, const float *test_data2) {
     std::vector<uint8_t> tmp_q1(test_size);
-    std::vector<uint8_t> tmp_q2(test_size);
+    std::vector<uint8_t> tmp_q2(test_size*2);
 
     qfns.quantize_row_q(test_data1, tmp_q1.data(), test_size);
-    qfns.quantize_row_q(test_data2, tmp_q2.data(), test_size);
+    qfns.quantize_row_q_dot(test_data2, tmp_q2.data(), test_size);
 
     float result = INFINITY;
     qfns.vec_dot_q(test_size, &result, tmp_q1.data(), tmp_q2.data());

tests/test-quantize-perf.cpp

@@ -30,6 +30,7 @@ struct quantize_perf_params {
     bool op_quantize_row_q_reference = false;
     bool op_quantize_row_q = false;
     bool op_dequantize_row_q = false;
+    bool op_quantize_row_q_dot = false;
     bool op_vec_dot_q = false;
 };
 
@@ -147,6 +148,8 @@ int main(int argc, char * argv[]) {
                 params.op_quantize_row_q = true;
             } else if (op == "dequantize_row_q") {
                 params.op_dequantize_row_q = true;
+            } else if (op == "quantize_row_q_dot") {
+                params.op_quantize_row_q_dot = true;
             } else if (op == "vec_dot_q") {
                 params.op_vec_dot_q = true;
             } else {
@@ -184,8 +187,8 @@ int main(int argc, char * argv[]) {
     if (params.test_sizes.empty()) {
         params.test_sizes.push_back(L1_SIZE);
     }
-    if (!(params.op_quantize_row_q_reference || params.op_quantize_row_q || params.op_dequantize_row_q || params.op_vec_dot_q)) {
-        params.op_quantize_row_q_reference = params.op_quantize_row_q = params.op_dequantize_row_q = params.op_vec_dot_q = true;
+    if (!(params.op_quantize_row_q_reference || params.op_quantize_row_q || params.op_dequantize_row_q || params.op_quantize_row_q_dot || params.op_vec_dot_q)) {
+        params.op_quantize_row_q_reference = params.op_quantize_row_q = params.op_dequantize_row_q = params.op_quantize_row_q_dot = params.op_vec_dot_q = true;
     }
 
     std::sort(params.test_sizes.begin(), params.test_sizes.end());
@@ -268,6 +271,20 @@ int main(int argc, char * argv[]) {
                 printf("\n");
             }
 
+            if (params.op_quantize_row_q_dot) {
+                printf("  quantize_row_q_dot\n");
+                for (size_t size : params.test_sizes) {
+                    printf("    %zu values (%.2f MB)\n", size, 4*size/(float)(1024*1024));
+                    auto quantize_fn = [&](void ) {
+                        qfns.quantize_row_q_dot(test_data1, test_q1, size);
+                        return test_q1[0];
+                    };
+                    size_t quantized_size = size / ggml_blck_size(type) * ggml_type_size(type);
+                    benchmark_function(size, quantized_size, quantize_fn);
+                }
+                printf("\n");
+            }
+
             if (params.op_vec_dot_q) {
                 printf("  vec_dot_q\n");
                 qfns.quantize_row_q(test_data1, test_q1, largest);