High performance computing (HPC)

The CEVAA is able to handle large-scale cases through digital simulation. For this, we use intensive computing means to obtain reduced computing times.

Supercomputers for intensive computing

The CEVAA relies on the CRIANN, computing mesocentre for Normandy, to have access to supercomputers.

In the field of intensive computing, CRIANN operates a technical platform made up of high-performance computing machines (HPC-HPDA) intended for large-scale digital simulations as well as Artificial Intelligence and the processing of massive data.

Thus, CEVAA sometimes uses the supercomputer to carry out large-scale numerical simulations and calculations.

Advantages of a supercomputer:

• Fast calculations (use of a parallel solver)

• Launching calculations that would be impossible on a machine (processors and RAM too limited)

• Possibility of launching several simulations at the same time (batch)

• Possibility of launching sequential calculations (calculations at night)

Here are some examples of studies carried out by our simulation team on CRIANN’s MYRIA supercomputer and AUSTRAL supercomputer:

• Vibro-acoustic calculation with parallel CODE_ASTER for a model with more than 3 million degrees of freedom
• Rapid dynamic impact calculation with RADIOSS
• Metallic AM powder bed spreadability calculation (using discrete element code LMGC90)
• Numerical Experimental Plan (DOE) for calculating the impact noise performance of a multilayer floor covering

Example of calculation time savings for a simulation of the impact sound of a multi-layered floor: