# Customer Testimonials

"Today our largest IBM computers, BlueGene/L and Purple, ranked #1 and #3 respectively on the November 2005 Top500 list, use SLURM. This decision reduces large job launch times from tens of minutes to seconds. This effectively provides us with millions of dollars with of additional compute resources without additional cost. It also allows our computational scientists to use their time more effectively. SLURM is scalable to very large numbers of processors, another essential ingredient for use at LLNL. This means larger computer systems can be used than otherwise possible with a commensurate increase in the scale of problems that can be solved. SLURM's scalability has eliminated resource management from being a concern for computers of any foreseeable size. It is one of the best things to happen to massively parallel computing."
Dona Crawford, Associate Directory Lawrence Livermore National Laboratory

"We are extremely pleased with SLURM and strongly recommend it to others because it is mature, the developers are highly responsive and it just works."
Jeffrey M. Squyres, Pervasive Technology Labs at Indiana University

We adopted SLURM as our resource manager over two years ago when it was at the 0.3.x release level. Since then it has become an integral and important component of our production research services. Its stability, flexibility and performance has allowed us to significantly increase the quality of experience we offer to our researchers."
Dr. Greg Wettstein, Ph.D. North Dakota State University

"SLURM is the coolest thing since the invention of UNIX... We now can control who can log into [compute nodes] or at least can control which ones to allow logging into. This will be a tremendous help for users who are developing their apps."
Dennis Gurgul, Research Computing, Partners Health Care

"SLURM is a great product that I'd recommend to anyone setting up a cluster, or looking to reduce their costs by abandoning an existing commercial resource manager."
Josh Lothian, National Center for Computational Sciences, Oak Ridge National Laboratory

"SLURM is under active development, is easy to use, works quite well, and most important to your harried author, it hasn't been a nightmare to configure or manage. (Strong praise, that.) I would range SLURM as the best of the three open source batching systems available, by rather a large margin."
Bryan O'Sullivan, Pathscale

"SLURM scales perfectly to the size of MareNostrum without noticeable performance degradation; the daemons running on the compute nodes are light enough to not interfere with the applications' processes and the status reports are accurate and concise, allowing us to spot possible anomalies in a single sight."
Erest Artiaga, Barcelona Supercomputing Center

"SLURM was a great help for us in implementing our own very concise job management system on top of it which could be taylored precisely to our needs, and which at the same time is very simple to use for our customers. In general, we are impressed with the stability, scalability, and performance of SLURM. Furthermore, SLURM is very easy to configure and use. The fact that SLURM is open-source software with a free license is also advantageous for us in terms of cost-benefit considerations."
Dr. Wilfried Juling, Direktor, Scientific Supercomputing Center, University of Karlsruhe

"SLURM has been adopted as the parallel allocation infrastructure used in HP's premier cluster stack, XC System Software. SLURM has permitted easy scaling of parallel applications on cluster systems with thousands of processors, and has also proven itself to be highly portable and efficient between interconnects including Quadrics, QsNet, Myrinet, Infiniband and Gigabit Ethernet."
Bill Celmaster, XC Program Manager, Hewlett-Packard Company

Last modified 17 January 2007