What do the options in ConfigProto like allow_soft_placement and log_device_placement mean?
If you look at the API of ConfigProto, on line 278, you will see this: // Whether soft placement is allowed. If allow_soft_placement is true, // an op will be placed on CPU if // 1. there’s no GPU implementation for the OP // or // 2. no GPU devices are known or registered // … Read more