in cluster-trace-gpu-v2020/simulator/node.py [0:0]
def release_cpus(self, num_cpus=0):
'''
release using cpus back to free list
'''
if self.idl_cpus + num_cpus > self.num_cpus:
self.idl_cpus = self.num_cpus
return False
else:
self.idl_cpus += num_cpus
return True