Accelerated Computing HPC Compilers

Legacy PGI Compilers This forum contains the contents from the original PGI User Forums. Please post questions related to PGI compilers here. nvc, nvc++ and nvfortran Greetings and welcome to the NVIDIA HPC Compilers forum. Post your questions and comments here pertaining to the NVIDIA C, C++ and Fortran HPC compilers, and to their interoperation with NVCC and other HPC SDK components.

Topic	Replies	Views	Activity
Just released: HPC SDK v25.1 nvc, nvc++ and nvfortran Please refer to the Release Notes for full details. Download the current release at https://developer.nvidia.com/nvidia-hpc-sdk-downloads. View the current documentation.	1	1	January 23, 2025
Just released: HPC SDK v25.1 Legacy PGI Compilers Please refer to the Release Notes for full details. Download the current release at https://developer.nvidia.com/nvidia-hpc-sdk-downloads. View the current documentation.	1	1	January 23, 2025
Unexpected error when accessing an optional scalar argument inside an OpenACC kernel with `default(present)` nvc, nvc++ and nvfortran	0	5	January 23, 2025
OpenACC + CUDA implementation nvc, nvc++ and nvfortran	2	13	January 23, 2025
Tesla P100 Issue – Processing Stops at 8MiB nvc, nvc++ and nvfortran drive-hardware-setup , driver	0	10	December 12, 2024
Unable to get code to run on multiple GPUs nvc, nvc++ and nvfortran	5	47	January 18, 2025
Is it necessary to create an interface in CUDA Fortran to call cudaMallocPitch nvc, nvc++ and nvfortran	1	6	January 17, 2025
How to map private dynamic array to the GPU with OpenMP and nvc? nvc, nvc++ and nvfortran	19	40	January 17, 2025
Out of bounds issue when using `lbound/ubound` inside an OpenACC kernel with `nvfortran` nvc, nvc++ and nvfortran	2	17	January 16, 2025
OpenACC code using gpu=managed is faster than explicit data management for multiple gpu computation nvc, nvc++ and nvfortran	2	23	January 14, 2025
Async Issue: Dual GPU Parallel Execution Runs Sequentially nvc, nvc++ and nvfortran	8	34	January 13, 2025
Why is there still several CPU-to-GPU transfers between two consecutive kernel calls in CUDA? nvc, nvc++ and nvfortran	2	10	January 13, 2025
Why are there still so many CPU to GPU data transfer operations between the two kernel functions, occupying 80% of the entire cudaMemcpy API? nvc, nvc++ and nvfortran	1	7	January 13, 2025
"Why cudaMemcpy Shows Higher Duration in API Calls Than GPU Activities in nvprof?" nvc, nvc++ and nvfortran	5	16	January 13, 2025
Unexpected nvc++ (24.11) "dinit" compiler error with __m128 zero init nvc, nvc++ and nvfortran	1	6	January 10, 2025
Simulation using Multi GPU with OpenMP+OpenACC nvc, nvc++ and nvfortran	7	41	January 10, 2025
Assistance Needed with GPU Memory Allocation Error When Packing and Unpacking Arrays nvc, nvc++ and nvfortran	5	12	January 9, 2025
Call to NVHPC runtime function not supported - pghpf_rnum_i8 nvc, nvc++ and nvfortran cuda , kernel	1	15	January 7, 2025
Omp target data use_device_ptr vs use_device_addr nvc, nvc++ and nvfortran	11	378	January 7, 2025
Installing java after installing 32 bit workstation c/c++ Legacy PGI Compilers	1	4793	January 7, 2025
Help with cudaMemcpyAsync for transferring 3D arrays in CUDA nvc, nvc++ and nvfortran	0	12	January 7, 2025
ICE in nvfortran for iso_c_binding nvc, nvc++ and nvfortran cuda	7	780	January 6, 2025
How to use OpenMP map directive to map dynamic array inside a struct/class to the GPU? nvc, nvc++ and nvfortran	16	80	January 17, 2025
Combining cudaMallocPitch() with Asynchronous Transfers in CUDA Fortran Post Content: nvc, nvc++ and nvfortran	1	14	December 31, 2024
Bugreport for nvfortran: Treatment of array bounds in the specification part nvc, nvc++ and nvfortran nvbugs	3	285	December 30, 2024
How to Use Shared Memory in CUDA Fortran for Efficient Array Assignment nvc, nvc++ and nvfortran	1	22	December 29, 2024
The Fortran OpenACC acceleration code compiles successfully but still runs on the CPU nvc, nvc++ and nvfortran	14	31	December 28, 2024
NVFORTRAN-F-0000-Internal compiler error. gen_llvm_expr(): no incoming ili 0 nvc, nvc++ and nvfortran	7	18	December 25, 2024
How to build parallel hdf5 with nvhpc? nvc, nvc++ and nvfortran	5	2339	December 23, 2024
Looking for an explanation / documentation on OpenACC present table dumps nvc, nvc++ and nvfortran	7	387	May 7, 2024