Apply Ck-tile argument parser for vectors [I/O] (#1758)

* Parser for a vector was added. Additionaly we valid correctnes of numbers

* Remove unnecessary comments

* Review part 1

* Review part 2

* Add const to variadic lambda

* Rename C->K

example/ck_tile/17_grouped_gemm/grouped_gemm.hpp

@@ -34,13 +34,19 @@ using grouped_gemm_kargs = ck_tile::GroupedGemmHostArgs;
 auto create_args(int argc, char* argv[])
 {
     ck_tile::ArgParser arg_parser;
-    arg_parser.insert("a_layout", "R", "A tensor data layout - Row by default")
-        .insert("b_layout", "R", "B tensor data layout - Row by default")
-        .insert("c_layout", "R", "C tensor data layout - Row by default")
-        .insert("validate", "1", "0. No validation, 1. Validation on CPU")
-        .insert("warmup", "10", "number of iterations before benchmark the kernel")
-        .insert("repeat", "100", "number of iterations to benchmark the kernel")
-        .insert("group_count", "16", "group count");
+    arg_parser.insert("Ms", "", "M dimensions - empty by default.")
+        .insert("Ns", "", "N dimensions - empty by default.")
+        .insert("Ks", "", "K dimensions - empty by default.")
+        .insert("stride_As", "", "Tensor A strides - it is empty by default.")
+        .insert("stride_Bs", "", "Tensor B strides - it is empty by default.")
+        .insert("stride_Cs", "", "Tensor C strides - it is empty by default.")
+        .insert("a_layout", "R", "A tensor data layout - Row by default.")
+        .insert("b_layout", "R", "B tensor data layout - Row by default.")
+        .insert("c_layout", "R", "C tensor data layout - Row by default.")
+        .insert("validate", "1", "0. No validation, 1. Validation on CPU.")
+        .insert("warmup", "10", "number of iterations before benchmark the kernel.")
+        .insert("repeat", "100", "number of iterations to benchmark the kernel.")
+        .insert("group_count", "16", "group count.");
 
     bool result = arg_parser.parse(argc, argv);
     return std::make_tuple(result, arg_parser);

example/ck_tile/17_grouped_gemm/run_grouped_gemm_example.inc

@@ -53,17 +53,24 @@ int run_grouped_gemm_example_with_layouts(int argc,
         return -1;
     };
 
+    auto valid_input_data = [&](int group_count, const auto&... args) {
+        return !(args.empty() || ...) && group_count == (args.size() == ...);
+    };
+
     const int group_count = arg_parser.get_int("group_count");
     const int repeat      = arg_parser.get_int("repeat");
     const int warmup      = arg_parser.get_int("warmup");
 
-    std::vector<ck_tile::index_t> Ms;
-    std::vector<ck_tile::index_t> Ns;
-    std::vector<ck_tile::index_t> Ks;
-    std::vector<ck_tile::index_t> stride_As;
-    std::vector<ck_tile::index_t> stride_Bs;
-    std::vector<ck_tile::index_t> stride_Cs;
+    std::vector<ck_tile::index_t> Ms        = arg_parser.get_int_vec("Ms");
+    std::vector<ck_tile::index_t> Ns        = arg_parser.get_int_vec("Ns");
+    std::vector<ck_tile::index_t> Ks        = arg_parser.get_int_vec("Ks");
+    std::vector<ck_tile::index_t> stride_As = arg_parser.get_int_vec("stride_As");
+    std::vector<ck_tile::index_t> stride_Bs = arg_parser.get_int_vec("stride_Bs");
+    std::vector<ck_tile::index_t> stride_Cs = arg_parser.get_int_vec("stride_Cs");
 
+    if(!valid_input_data(group_count, Ms, Ns, Ks, stride_As, stride_Bs, stride_Cs))
+    {
+        std::cout << "Please check the input data. Default values will be used." << std::endl;
         for(int i = 0; i < group_count; i++)
         {
             Ms.push_back(256 + 256 * i);
@@ -74,6 +81,7 @@ int run_grouped_gemm_example_with_layouts(int argc,
             stride_Bs.push_back(Ks[i]);
             stride_Cs.push_back(Ns[i]);
         }
+    }
 
     std::vector<ck_tile::HostTensor<ADataType>> a_m_k_tensors;
     std::vector<ck_tile::HostTensor<BDataType>> b_k_n_tensors;

include/ck_tile/host/arg_parser.hpp

@@ -15,11 +15,14 @@
 
 namespace ck_tile {
 /*
- * a host side utility, arg parser for
+ * a host side utility, arg parser for, either
+ * -[key0] = [value0, value1, value2]
+ * or
  * -[key0]=[value0] -[key1]=[value1] ...
  */
 class ArgParser
 {
+
     public:
     class Arg
     {
@@ -187,6 +190,45 @@ class ArgParser
         return value;
     }
 
+    std::vector<std::string> get_string_vec(const std::string& name,
+                                            const std::string& delimiter = ",") const
+    {
+        if(get_str(name).empty())
+        {
+            return {};
+        }
+        std::string s = get_str(name);
+        std::vector<std::string> tokens;
+        size_t pos = 0;
+        std::string token;
+        while((pos = s.find(delimiter)) != std::string::npos)
+        {
+            token = s.substr(0, pos);
+            tokens.push_back(token);
+            s.erase(0, pos + delimiter.length());
+        }
+        tokens.push_back(s);
+
+        return tokens;
+    }
+
+    std::vector<int> get_int_vec(const std::string& name, const std::string& delimiter = ",") const
+    {
+        if(get_str(name).empty())
+        {
+            return {};
+        }
+        const std::vector<std::string> args = get_string_vec(name, delimiter);
+        std::vector<int> tokens;
+        tokens.reserve(static_cast<int>(args.size()));
+        for(const std::string& token : args)
+        {
+            int value = atoi(token.c_str());
+            tokens.push_back(value);
+        }
+        return tokens;
+    }
+
     private:
     std::unordered_map<std::string, Arg> input_map;
     std::vector<std::string> keys;