Undefined symbol: cblas_dgemm

I’m sorry to hear you ran into this problem!

This either means you have incompatible BLAS libraries installed or Hail cannot find your BLAS libraries. Try setting the executor class path to explicitly reference the libraries. If you’re using spark-submit, try this:

--conf spark.executor.extraClassPath="/path/to/libblas.so:/path/to/liblapack.so"

You can also set configuration parameters in:

hl.init(spark_conf={
    "spark.executor.extraClassPath": "/path/to/libblas.so:/path/to/liblapack.so"})