Add missing tests for hipHostMalloc (#2566)

catch/stress/memory/hipHostMalloc.cc

@@ -0,0 +1,52 @@
+/*
+Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANNTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER INN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR INN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "hip_test_common.hh"
+#include "hip_test_helper.hh"
+
+// Stress allocation tests
+// Try to allocate as much memory as possible
+// But since max allocation can fail, we need to try the next value
+
+TEST_CASE("Stress_hipHostMalloc_MaxAllocation") {
+  size_t devMemAvail{0}, devMemFree{0};
+  HIP_CHECK(hipMemGetInfo(&devMemFree, &devMemAvail));
+  auto hostMemFree = HipTest::getMemoryAmount() /* In MB */ * 1024 * 1024;  // In bytes
+  REQUIRE(devMemFree > 0);
+  REQUIRE(devMemAvail > 0);
+  REQUIRE(hostMemFree > 0);
+
+  size_t memFree = std::min(devMemFree, hostMemFree);  // which is the limiter cpu or gpu
+  char* d_ptr{nullptr};
+  size_t counter{0};
+
+  INFO("Max Allocation of " << memFree << " bytes!");
+  while (hipHostMalloc(&d_ptr, memFree) != hipSuccess && memFree > 1) {
+    counter++;
+    INFO("Attempt to allocate " << memFree << " bytes out of " << devMemFree << "bytes Failed!");
+    memFree >>= 1;          // reduce the memory to be allocated by half
+    REQUIRE(counter <= 2);  // Make sure that we are atleast able to allocate 1/4th of max memory
+  }
+
+  HIP_CHECK(hipMemset(d_ptr, 1, memFree));
+  HIP_CHECK(hipDeviceSynchronize());  // Flush caches
+  REQUIRE(std::all_of(d_ptr, d_ptr + memFree, [](unsigned char n) { return n == 1; }));
+  HIP_CHECK(hipHostFree(d_ptr));
+}
+