Issues with Block Lanczos eigensolver method in Mechanical.

Issues with Block Lanczos eigensolver method in Mechanical. Error - Size too large for a memory allocation Error - Failure in BLOCK LANCZOS eigensolver. Error code = -1.

According to the user guide for Block Lanczos method, using this method to solve larger models with about 1 MM DOF  or more can require significant amount of memory. The alternative here is to try to use the PCG Solver.

Reference

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