Hi, OPENMPI users, I have met some problem while doing experiments on Amazon EC2. I have chosen instance type r3.2xlarge. As amazon claimed, it has 8 vcpu. Each vCPU is a hyperthread of an Intel Xeon core for M3, C4, C3, R3, HS1, G2, I2, and D2. (from *https://aws.amazon.com/ec2/instance-types/ <https://aws.amazon.com/ec2/instance-types/>)*
However, when I try to run experiments on 4 machines, each with 8 slots. OPENMPI reminds me that I am oversubscribing. Does anyone know the reason? Thanks in advance! -- Best Regards. --- Xing FENG PhD Candidate Database Research Group School of Computer Science and Engineering University of New South Wales NSW 2052, Sydney Phone: (+61) 413 857 288
