PathScale

PathScale has a multifaceted history marked by significant shifts in focus, ownership, and technology, ultimately centering on high-performance computing (HPC). The company was originally founded as Key Research in July 2001 by Tom McWilliams, who brought on colleagues from his time at Lawrence Livermore National Laboratory (LLNL), including Jeff Rubin, Jeff Broughton, and Fred Chow. The founders shared a background working on the S1 supercomputer at LLNL in the early 1980s. McWilliams himself had previously founded Valid Logic Systems and Key Computer, and held positions at SGI, Sun Microsystems, and Amdahl, while Chow had been the chief scientist for compilers at SGI and MIPS. The initial mission was to develop clustered Linux server solutions. In 2003, the company emerged from stealth mode, rebranded as PathScale, and shifted its focus to high-performance 64-bit compilers, spurred by the success of AMD's Opteron processor.

PathScale's primary business revolves around its EKOPath Compiler Suite, a set of highly optimizing C, C++, and Fortran compilers designed for x86-64 microprocessor architectures. This suite is engineered to maximize application performance on Linux clusters, serving clients in fields such as scientific research, engineering, and data analysis. Applications benefiting from this technology include seismic processing, financial modeling, medical research, and computational fluid dynamics. The company's business model appears to be based on selling compiler licenses and providing support and optimization services to users who require maximum performance from their computing hardware. Over the years, the product evolved to support a wide range of processors and architectures, including those from Intel, AMD, and ARM, as well as GPGPU accelerators from NVIDIA and AMD.

The company's journey has been characterized by a series of acquisitions. In February 2006, QLogic acquired PathScale for approximately $109 million, primarily for its InfiniPath interconnect technology. The compiler division was subsequently sold to SiCortex in August 2007 and then acquired by Cray in 2009 after SiCortex's liquidation. This cycle came full circle in March 2012 when a reborn PathScale Inc., led by then-CTO Christopher Bergström, acquired all of its intellectual property and assets back from Cray, re-establishing itself as an independent entity. Under this new leadership, the company expanded its technology to focus on computational offloading for accelerators. In 2017, PathScale signaled it was exploring a shift towards providing training and code porting services in addition to compiler licenses to adapt to market conditions. More recently, the company has pivoted to offering data-driven, multi-CDN (Content Delivery Network) solutions, using real user data to optimize performance and cost for its enterprise clients. Keywords: high-performance computing, HPC compilers, Fortran compiler, C++ compiler, EKOPath Compiler Suite, multicore computing, many-core architectures, GPGPU, Linux clusters, scientific computing, code optimization, parallel programming, x86-64 compilers, Tom McWilliams, Christopher Bergström, Lawrence Livermore National Laboratory, QLogic, Cray, SiCortex, multi-CDN, CDN optimization