LS-DYNA Computer Setup

Hi,

I have a question about the setup of the software. We are purchasing a new computer specifically for LS-DYNA. Will there be some difference using single processor and double processor. We noticed some result differences when using multi-node using a supercomputer. We would like to hear some professional views on this.

Answers

  • cxquancxquan Berkeley, CAForum Coordinator

    For the simulations of low velocity impacts or manufacturing/forming processes, double precision is highly recommended to use.

    Since the increment of the variables like displacement, velocity, strain, or stress at each time step may be very small, single precision may trigger numerical round-off error in math operations. Single precision can be very useful for simulating highly transient events such as high-velocity impacts.

  • Does double processor boost calculation speed to a large extent?

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