Accelerated Computing HPC Compilers

Legacy PGI Compilers (archived) 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
NVHPC bundled OpenBLAS 0.3.23: ZHEEVD pathological behavior at 8000×8000 with 288 OpenMP threads on GH200 Grace/aarch64 nvc, nvc++ and nvfortran	0	8	August 23, 2026
CFI_cdesc_t segfault with nvhpc/26.5 nvc, nvc++ and nvfortran	2	40	August 21, 2026
Nvfortran 26.5: "use associated ... cannot be redeclared" in submodule scopes for symbols not imported by parent or submodule nvc, nvc++ and nvfortran hpc-compilers-nvfortran	1	28	August 20, 2026
"parse use of undefined value" error when compiling Kokkos OpenACC program using nvc++ version 25.11 or later nvc, nvc++ and nvfortran	1	23	August 19, 2026
Totally different results on Intel and Nvidia FORTRAN compilers for DO CONCURRENT loop nvc, nvc++ and nvfortran hpc-compilers-nvfortran	12	57	August 19, 2026
Nvfortran 26.5: "use of undefined value" LLVM IR error with type-bound procedure call inside !$OMP PARALLEL DO nvc, nvc++ and nvfortran	2	44	August 14, 2026
Nvhpc 26.5 nvfortran internal compiler error: mk_assign_sptr: upper bound missing nvc, nvc++ and nvfortran	3	47	August 14, 2026
Can NVHPC-bundled OpenBLAS LP64 and ILP64 LAPACK interfaces be used in one executable? nvc, nvc++ and nvfortran nvpl	7	92	August 10, 2026
HDF5 develop testing on GitHub with nvhpc 26.3.0 fails to compile test/dt_arith.c, crashing LLVM nvc, nvc++ and nvfortran	7	123	August 5, 2026
Nvc++ ICE on github runners (Zen 4 without AVX512 capability) when lowering vector ldexp nvc, nvc++ and nvfortran	3	55	August 4, 2026
NVFortran: Position of interface and abstract interface leads to broken module nvc, nvc++ and nvfortran	1	32	July 30, 2026
HPC-SDK Ubuntu APT Repository instructions fail with 404 nvc, nvc++ and nvfortran hpc-sdk	3	82	July 30, 2026
Problem with getting c_loc pointers from character arrays nvc, nvc++ and nvfortran	3	90	July 24, 2026
Nvfortran 26.5 -- TERMINATED Signal 11 nvc, nvc++ and nvfortran	1	57	July 20, 2026
This Forum has been Archived Legacy PGI Compilers (archived) We are no longer accepting new posts in this forum.	0	32	July 17, 2026
Nvfortran OpenACC performance regression: WENO5 reconstruction kernel ~1.7x slower since 24.7 (24.5 good, 24.7 first bad) nvc, nvc++ and nvfortran performance , hpc-sdk , hpc-compilers-nvfortran	2	89	July 16, 2026
Nvfortran fails to apply CSE in an inline procedure called from a do concurrent kernel nvc, nvc++ and nvfortran	1	36	July 16, 2026
Do concurrent does not auto collapse if explicit shape dummy array and procedure call is present nvc, nvc++ and nvfortran	1	52	July 16, 2026
Portability issue: transitive module requirements because of default component initializer nvc, nvc++ and nvfortran	1	52	July 16, 2026
Frontend bug: Illegal context for the component reference nvc, nvc++ and nvfortran	1	55	July 13, 2026
Frontend bug: nvfortran rejects recursive type nvc, nvc++ and nvfortran	1	60	July 13, 2026
Absent-optional explicit-shape class(*) bug with nvfortran nvc, nvc++ and nvfortran hpc-compilers-nvfortran	1	52	July 6, 2026
How to query the number of SMs using OpenACC? nvc, nvc++ and nvfortran	3	76	July 2, 2026
Fortran FFTW interfaces in NVPL nvc, nvc++ and nvfortran nvpl	7	161	July 1, 2026
Nvhpc 26.5 performance regression: redundant per-kernel-launch derived-type descriptor copies from do concurrent local() in !$acc kernels nvc, nvc++ and nvfortran	4	102	June 30, 2026
Internal compiler error. ILM file: can't find intrinsic ..sqrt nvc, nvc++ and nvfortran hpc-compilers-nvfortran	2	115	June 24, 2026
Frontend bug: Argument number 2 to value: type mismatch nvc, nvc++ and nvfortran hpc-compilers-nvfortran	2	76	June 24, 2026
Frontend bug: Illegal number or type of arguments nvc, nvc++ and nvfortran hpc-compilers-nvfortran	3	84	June 24, 2026
Compiler bug: linker can't find subroutine from own module nvc, nvc++ and nvfortran	2	68	June 24, 2026
Nvfortran Internal Compiler Error "we should be allocating on device" when compiling OpenACC code nvc, nvc++ and nvfortran	2	81	June 24, 2026