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- #Vmware vsphere 6.5 lab in workstation reddit full#
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#Vmware vsphere 6.5 lab in workstation reddit software#
Table 1 shows all cluster hardware and software details. Native tests were run using CentOS on each host, while virtual tests were run with the VMware ESXi hypervisor running on each host along with a single virtual machine running the same CentOS version.įigure 2: Testbed Virtual Cluster Architecture VMware DirectPath I/O technology (i.e., passthrough mode) is used to allow the guest OS (the operating system running within a VM) to directly access the EDR InfiniBand device, which shortens the message delivery path by bypassing the network virtualization layer to deliver best performance. vCenter, the vSphere management component, as well as NFS and DNS are running in virtual machines (VMs) on the management node. Testbed Configuration As illustrated in Figure 2, the testbed consists of 32 Dell PowerEdge C6320 compute nodes and one management node. With our continued performance optimization efforts, we see decreasing overheads running these challenging HPC workloads and this blog post presents some MPI results as examples.įigure 1: Illustration of several HPC virtualization benefits MPI applications by nature are more challenging, requiring sustained and intensive communication between nodes, making them sensitive to interconnect performance.
#Vmware vsphere 6.5 lab in workstation reddit full#
With advances in both VMware vSphere as well as x86 microprocessor architecture, throughput applications can generally run at close to full speed in the VMware virtualized environment - with less than 5% performance degradation compared to native, and often just 1 – 2%.
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HPC virtualization performance is primarily determined by two factors hardware virtualization support and virtual infrastructure capability.
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We focus here on the use of on-premises, private clouds for HPC - environments in which appropriate tuning can be applied to deliver maximum application performance. Figure 1 illustrates several HPC virtualization benefits.ĭespite the potential benefits of moving HPC workloads to a private, public, or hybrid cloud, performance concerns have been a barrier to adoption. While much of the interest stems from gaining the general value of cloud technologies, there are specific benefits of virtualizing HPC and supporting it in a cloud environment, such as centralized operation, cluster resource sharing, research environment reproducibility, multi-tenant data security, fault isolation and resiliency, dynamic load balancing, efficient power management, etc. Why HPC virtualization Interest in HPC virtualization and cloud have grown rapidly. In addition to performance results, virtual cluster architecture and configuration recommendations for optimal performance are described. The tests were performed on a 32-node, EDR-connected Dell PowerEdge C6320 cluster, located in the Dell EMC HPC Innovation Lab in Austin, Texas. This article presents performance comparisons of several typical MPI applications - LAMMPS, WRF, OpenFOAM, and STAR-CCM+ - running on a traditional, bare-metal HPC cluster versus a virtualized cluster running VMware’s vSphere virtualization platform.