# Could not recognize one A100 card of two cards by nvidia-smi

**URL:** <https://forums.developer.nvidia.com/t/could-not-recognize-one-a100-card-of-two-cards-by-nvidia-smi/180770>\
**Category:** Linux\
**Tags:** ubuntu\
**Created:** [June 15, 2021, 1:37am UTC](https://forums.developer.nvidia.com/t/could-not-recognize-one-a100-card-of-two-cards-by-nvidia-smi/180770 "2021-06-15T01:37:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Kaka\_m](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@Kaka\_m](https://forums.developer.nvidia.com/u/Kaka_m)\
**Post date:** [June 15, 2021, 1:37am UTC](https://forums.developer.nvidia.com/t/could-not-recognize-one-a100-card-of-two-cards-by-nvidia-smi/180770/1 "2021-06-15T01:37:38Z")

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Hi NV Team,

Please give me advice to resolve the issue.  
Issue:  
Suddenly our server did not recognized one A100 cards of two ones by nvidia-smi after restarting server.  
Note:  
lspic command showed the two cards like below.

```auto
nvidia@a100-server-b:~$ lspci | grep NVIDIA
24:00.0 3D controller: NVIDIA Corporation Device 20f1 (rev a1)
e1:00.0 3D controller: NVIDIA Corporation Device 20f1 (rev a1)
nvidia@a100-server-b:~$ nvidia-smi
Tue Jun 15 01:34:28 2021       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 465.19.01 Driver Version: 465.19.01 CUDA Version: 11.3 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA A100-PCI... On | 00000000:24:00.0 Off | 0 |
| N/A 39C P0 38W / 250W | 0MiB / 40536MiB | 0% Default |
| | | Disabled |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+
nvidia@a100-server-b:~$ uname -r
4.15.0-144-generic
nvidia@a100-server-b:~$ cat /etc/os-release 
NAME="Ubuntu"
VERSION="18.04.5 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.5 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
nvidia@a100-server-b:~$  

```

If you need more information, please let me know.  
Best regards.  
Kaka

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<div class="post-metadata">

**Author:** ![Kaka\_m](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@Kaka\_m](https://forums.developer.nvidia.com/u/Kaka_m)\
**Post date:** [August 23, 2021, 12:26am UTC](https://forums.developer.nvidia.com/t/could-not-recognize-one-a100-card-of-two-cards-by-nvidia-smi/180770/2 "2021-08-23T00:26:04Z")

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Close this issue…

---

<div class="post-metadata">

**Author:** ![nadeemm](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/nadeemm/32/367020_2.png) [@nadeemm](https://forums.developer.nvidia.com/u/nadeemm)\
**Post date:** [October 12, 2021, 6:00pm UTC](https://forums.developer.nvidia.com/t/could-not-recognize-one-a100-card-of-two-cards-by-nvidia-smi/180770/3 "2021-10-12T18:00:40Z")

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