Updated numCPUs to work for Linux or Mac
Updated numCPUs to work for Linux or Mac

cianfrocco-lab/cryoem-cloud-tools,cianfrocco-lab/cryoem-cloud-tools,leschzinerlab/AWS,cianfrocco-lab/cryoem-cloud-tools,cianfrocco-lab/cryoem-cloud-tools,leschzinerlab/AWS,cianfrocco-lab/cryoem-cloud-tools,cianfrocco-lab/cryoem-cloud-tools