40 lines
1.2 KiB
Markdown
40 lines
1.2 KiB
Markdown
|
---
|
||
|
|
title: testingGPU
|
||
|
|
updated: 2022-04-03 09:01:13Z
|
||
|
|
created: 2021-05-04 14:58:11Z
|
||
|
|
---
|
||
|
|
|
||
|
|
### list devices CPU, GPU
|
||
|
|
|
||
|
|
```python
|
||
|
|
tf.config.experimental.list_physical_devices("GPU")
|
||
|
|
from tensorflow.python.client import device_lib
|
||
|
|
print(device_lib.list_local_devices())
|
||
|
|
```
|
||
|
|
|
||
|
|
### Init GPU; disable experimentals
|
||
|
|
```python
|
||
|
|
physical_devices = tf.config.list_physical_devices('GPU')
|
||
|
|
tf.config.experimental.set_memory_growth(physical_devices[0], True)
|
||
|
|
tf.config.experimental.disable_mlir_graph_optimization()
|
||
|
|
tf.config.experimental.enable_tensor_float_32_execution(enabled=True)
|
||
|
|
```
|
||
|
|
|
||
|
|
### assign memory to GPU
|
||
|
|
```python
|
||
|
|
gpus = tf.config.experimental.list_physical_devices("GPU")
|
||
|
|
|
||
|
|
if gpus:
|
||
|
|
# Restrict TensorFlow to only allocate 22GB of memory on the first GPU
|
||
|
|
try:
|
||
|
|
tf.config.experimental.set_virtual_device_configuration(
|
||
|
|
gpus[0],
|
||
|
|
[tf.config.experimental.VirtualDeviceConfiguration(memory_limit=7000)],
|
||
|
|
)
|
||
|
|
logical_gpus = tf.config.experimental.list_logical_devices("GPU")
|
||
|
|
print(len(gpus), "Physical GPUs,", len(logical_gpus), "Logical GPUs")
|
||
|
|
except RuntimeError as e:
|
||
|
|
# Virtual devices must be set before GPUs have been initialized
|
||
|
|
print(e)
|
||
|
|
```
|