Fixes memory allocation crash when work_group_size * compute_units is larger than max integer size (#1218)

* Makefile changes to support sse3 for icpx

* Removed long filename

* Reverted back to old README.md

* Reverted back to old README.md

* Deleted unused folders

* Fixed overflow when compute_units * work_group_size is larger than maximum integer size

* Fix

Co-authored-by: gta <[email protected]>

Author: jimmytwei

DirectProgramming/DPC++/SparseLinearAlgebra/merge-spmv/src/spmv.cpp

@@ -384,8 +384,16 @@ int main() {
 
     // Find max number of compute/execution units and max number of threads per
     // compute unit.
-    auto compute_units = device.get_info<info::device::max_compute_units>();
-    auto work_group_size = device.get_info<info::device::max_work_group_size>();
+    int compute_units = device.get_info<info::device::max_compute_units>();
+    int work_group_size = device.get_info<info::device::max_work_group_size>();
+
+    int thread_count = compute_units * work_group_size;
+
+    // Detect overflow
+    if ((size_t)thread_count > (size_t)INT_MAX) {
+        // Scale down work_group_size so within maximum integer range
+        work_group_size /= 2;
+    }
 
     cout << "Compute units: " << compute_units << "\n";
     cout << "Work group size: " << work_group_size << "\n";