The Portland Group
|Wholly owned subsidiary|
|Industry||Software, Programming tools|
|Founded||Wilsonville, OR, United States (1989)|
|Headquarters||Lake Oswego, Oregon, United States|
The Portland Group, Inc. or PGI was a company that produced a set of commercially available Fortran, C and C++ compilers for high-performance computing systems. On July 29, 2013, NVIDIA Corporation acquired The Portland Group, Inc.  The Portland Group (or PGI) name is now known as a brand of software development tools produced by NVIDIA Corporation.
The Portland Group was founded as a privately held company in 1989, using compiler technology developed at and acquired from Floating Point Systems, Inc. The first products, pipelining Fortran and C compilers, were released in 1991, targeting the Intel i860 processor. These compilers were used on Intel supercomputers like the iPSC/860, the Touchstone Delta, and the Paragon, and were the compilers of choice for the majority of i860-based platforms.
In the early 1990s PGI was deeply involved in the development of High Performance Fortran, or HPF, a data parallel language extension to Fortran 90 which provides a portable programming interface for a wide variety of architectures. PGI produced an HPF compiler which continues to be available today.
In 1996 PGI developed x86 compilers for the ASCI Red Supercomputer at Sandia National Laboratories, the first computer system to sustain teraflop performance. In 1997 PGI released x86 compilers for general use on Linux workstations.
The Portland Group was acquired by STMicroelectronics in December, 2000, and operated as a wholly owned subsidiary producing HPC compilers and tools for Linux, Windows, and Mac OS. NVIDIA Corporation acquired PGI from STMicroelectronics on July 29, 2013. Today, the same compilers and tools are made available through NVIDIA under "The Portland Group Compilers and Tools" brand name.
PGI has been deeply involved in the expansion of the use of GPGPUs for high-performance computing, developing CUDA Fortran   with NVIDIA Corporation and PGI Accelerator Fortran and C compilers  which use programming directives. PGI has more recently participated in the specification of the new standard OpenACC directives for GPU computing, and has released a compiler for the OpenCL language on multi-core ARM processors.
Product and market history
PGI compilers incorporate global optimization, vectorization, software pipelining, and shared-memory parallelization capabilities targeting both Intel and AMD processors. PGI supports the following high-level languages:
- Fortran 77
- Fortran 90/95/2003
- Fortran 2008 (partial)
- High Performance Fortran (HPF)
- ANSI C99 with K&R extensions
- ANSI/ISO C++
- CUDA Fortran
PGI also provides a parallel debugger, PGDBG, and a performance profiler, PGPROF, both of which support OpenMP and MPI parallelism on Linux, Windows, and Mac OS. On Windows, the PGI Fortran compiler and debugger have been fully integrated into Microsoft Visual Studio as a product called PGI Visual Fortran.
- 1989 - PGI founded
- 1991 - Pipelining i860 Compilers
- 1994 - Parallel i860 Compilers
- 1996 - ASCI Red TFLOPS Compilers
- 1997 - Linux/x86 Compilers
- 1998 - OpenMP for Linux/x86
- 1999 - SSE/SIMD Vectorization
- 2001 - VLIW ST100 Compilers
- 2003 - 64-bit Linux/x86 Compilers
- 2004 - ASCI Red Storm Compilers
- 2005 - PGI Unified Binary Technology
- 2006 - PGI Visual Fortran
- 2007 - 64-bit Mac OS Compilers
- 2008 - PGI Accelerator Compilers
- 2009 - CUDA Fortran Compiler
- 2010 - CUDA X86 Compiler
- 2011 - AVX/FMA Vectorization
- 2012 - OpenACC standard directives for GPU computing
- 2012 - PGI OpenCL compiler for Multi-core ARM CPUs. Removed after NVIDIA bought PGI.
- "Nvidia buys Portland Group for compiler smarts"
- "The ASCI Option Red Supercomputer". Intel Corporation. May 1996. Archived from the original on May 28, 2010. Retrieved 25 March 2011.
- "STMicroelectronics Announces Acquisition of Portland Group Inc.". STMicroelectronics. 19 December 2000. Retrieved 25 March 2011.
- "NVIDIA Pushes Further Into High Performance Computing With Portland Group Acquisition". NVIDIA. July 29, 2013.
- "PGI Products". NVIDIA. 1 October 2015. Retrieved 1 October 2015.
- "PGI and NVIDIA Team To Deliver CUDA Fortran Compiler". The Portland Group, Inc. 23 June 2009. Retrieved 29 June 2011.
- "PGI CUDA Fortran Now Available from The Portland Group". The Portland Group, Inc. 17 November 2009. Retrieved 29 June 2011.
- "New PGI 9.0 Compilers Simplify x64+GPU Programming". The Portland Group, Inc. 23 June 2009. Retrieved 29 June 2011.
- "Nvidia Announces CUDA Fortran Compiler Beta". eWeek. 29 Sep 2009. Retrieved 29 June 2011.