---
title: 日志说明
description: "Ascend DMI工具在执行命令行操作时会记录日志，日志存放路径如下："
url: https://www.hiascend.com/document/detail/zh/mindcluster/latest/toolbox/toolboxug/toolboxug_0026.html
sourcePath: /source/zh/mindcluster/2610/toolbox/toolboxug/toolboxug_0026.html
indexId: ad14719b4245a1ee9ac7fcba202db6e09c1c97902499a759a441aadeab54f3c965
---
# 日志说明

Ascend DMI工具在执行命令行操作时会记录日志，日志存放路径如下：

- root用户：/var/log/ascend-dmi
- 非root用户：~/var/log/ascend-dmi

当日志文件大小超过10MB后，将转存为日志文件.XX.gz（XX按自然数从1开始递增），所有转存文件总量不超过10，超过时将删除转存日期最早的日志以维持最大日志文件数量。

1. 当Ascend DMI工具试图获取设备类型失败时，将按照上述默认路径进行转存。
2. Ascend DMI工具设备类型为Atlas 500 A2 智能小站时，日志文件大小超过1MB后，将转存为日志文件.XX.gz（XX按自然数从1开始递增），所有转存文件总数量不超过10个，超过时将删除转存日期最早的日志以维持最大日志文件数量。其转存日志存放路径为：/home/log/ascend-dmi。
3. debug日志只会转存至/var/log/ascend-dmi目录下，且文件大小为10MB时会进行转存，在Atlas 500 A2 智能小站上请注意及时保存debug日志，防止重启发生丢失。


#### 日志备份

当设备类型为Atlas 500 A2 智能小站时，因驱动重启后，会清除原日志存放路径下的toolbox的日志文件，但驱动会将其保存在“/home/log/kbox_last_logs/”路径下的压缩文件reboot_back_up_XX.tar.gz中，解压后查看重启前的日志文件。


#### 数据落盘

在执行带宽诊断、算力诊断、NIC诊断时，如果执行诊断输出的格式为JSON，将会进行数据落盘操作，显示具体Device对应的带宽或算力数值。数据落盘文件存放路径如下：

- root用户：/var/log/ascend_check/result.txt
- 非root用户：~/var/log/ascend_check/result.txt

例如以下执行指令，都会生成数据落盘文件：

```
ascend-dmi -dg -i bandwidth -fmt json
```

```
ascend-dmi -dg -i aiflops -fmt json
```

```
ascend-dmi -dg -fmt json
```

```
ascend-dmi -dg -i nic -fmt json
```

- Atlas 200T A2 Box16/Atlas 200I A2 Box16 异构子框在虚拟机场景下，由于数据传输通道的特殊性，BandWidth诊断将不执行两个8p之间的P2P测试。


- 使用Atlas A2 训练系列产品、Atlas 800I A2 推理产品，执行带宽和算力诊断时，回显如下：

```
{
"device_0": {
"aiflops": "287.95",
"d2d bandwidth": "743.41",
"d2d write bandwidth": "740.86",
"d2h bandwidth": "28.07",
"h2d bandwidth": "25.12",
"p2p bidirectional bandwidth": "X",
"p2p bidirectional write bandwidth": "X",
"p2p unidirectional bandwidth": "X",
"p2p unidirectional write bandwidth": "X"
}
}
```


- 使用Atlas 900 A2 PoD 集群基础单元，执行NIC诊断时，回显如下：

```
{
"device_0": {
"nic roce read bandwidth": "device_7: 22.716700, device_1: 22.716524, device_6: 22.716612",
"nic roce send bandwidth": "device_6: 22.739834, device_1: 22.739473, device_7: 22.739336",
"nic roce write bandwidth": "device_1: 22.717470, device_7: 22.717920, device_6: 22.716806"
},
"device_1": {
"nic roce read bandwidth": "device_0: 22.716396, device_6: 22.716591, device_7: 22.716866",
"nic roce send bandwidth": "device_0: 22.739386, device_7: 22.740028, device_6: 22.739374",
"nic roce write bandwidth": "device_0: 22.716515, device_6: 22.716797, device_7: 22.716660"
},
"device_2": {
"nic roce read bandwidth": "device_4: 22.716534, device_5: 22.716562, device_3: 22.716787",
"nic roce send bandwidth": "device_4: 22.739746, device_5: 22.739492, device_3: 22.739464",
"nic roce write bandwidth": "device_3: 22.718027, device_4: 22.716728, device_5: 22.716581"
},
"device_3": {
"nic roce read bandwidth": "device_2: 22.716768, device_5: 22.716759, device_4: 22.716738",
"nic roce send bandwidth": "device_2: 22.739170, device_5: 22.739248, device_4: 22.739483",
"nic roce write bandwidth": "device_2: 22.716377, device_5: 22.716700, device_4: 22.717323"
},
"device_4": {
"nic roce read bandwidth": "device_2: 22.716816, device_3: 22.716747, device_5: 22.716280",
"nic roce send bandwidth": "device_2: 22.739374, device_3: 22.739355, device_5: 22.739552",
"nic roce write bandwidth": "device_2: 22.716934, device_5: 22.716484, device_3: 22.717091"
},
"device_5": {
"nic roce read bandwidth": "device_4: 22.717598, device_3: 22.717157, device_2: 22.717579",
"nic roce send bandwidth": "device_4: 22.739483, device_3: 22.739492, device_2: 22.739336",
"nic roce write bandwidth": "device_4: 22.716825, device_2: 22.713037, device_3: 22.716856"
},
"device_6": {
"nic roce read bandwidth": "device_0: 22.716681, device_7: 22.716719, device_1: 22.716681",
"nic roce send bandwidth": "device_0: 22.739630, device_1: 22.739414, device_7: 22.739374",
"nic roce write bandwidth": "device_0: 22.716446, device_7: 22.718134, device_1: 22.717091"
},
"device_7": {
"nic roce read bandwidth": "device_6: 22.717169, device_1: 22.716700, device_0: 22.717842",
"nic roce send bandwidth": "device_6: 22.739590, device_1: 22.739199, device_0: 22.739590",
"nic roce write bandwidth": "device_6: 22.716631, device_1: 22.716846, device_0: 22.716806"
}
}
```


- 使用Atlas A3 训练系列产品，执行带宽诊断时，回显如下：

```
{
"device_all": {
"d2h bandwidth": "356.64",
"h2d bandwidth": "297.58"
},
"device_0": {
"d2d bandwidth": "1516.66",
"d2d write bandwidth": "1484.89",
"p2p bidirectional bandwidth": "X, 366.68, 270.14, 269.81, 270.05, 269.96, 269.74, 269.78, 270.09, 270.03, 269.88, 269.82, 269.93, 269.97, 269.80, 269.80",
"p2p bidirectional write bandwidth": "X, 343.01, 250.02, 247.81, 248.13, 245.36, 246.59, 247.84, 246.04, 246.09, 248.19, 246.14, 245.33, 246.54, 248.46, 246.87",
"p2p unidirectional bandwidth": "X, 202.95, 164.73, 164.72, 164.78, 164.74, 164.73, 164.72, 164.77, 164.74, 164.75, 164.71, 164.75, 164.77, 164.75, 164.72",
"p2p unidirectional write bandwidth": "X, 191.71, 137.20, 137.41, 137.26, 137.21, 137.46, 137.49, 136.72, 137.18, 137.45, 137.40, 137.00, 137.11, 137.46, 137.34"
},
"device_1": {
"d2d bandwidth": "1528.46",
"d2d write bandwidth": "1470.62",
"p2p bidirectional bandwidth": "368.80, X, 269.88, 269.87, 269.99, 270.09, 269.81, 269.74, 270.06, 270.02, 269.96, 270.03, 270.13, 269.98, 269.94, 269.92",
"p2p bidirectional write bandwidth": "340.45, X, 246.08, 247.17, 246.87, 245.46, 245.34, 248.06, 244.03, 243.79, 247.23, 243.96, 243.78, 246.07, 247.84, 247.25",
"p2p unidirectional bandwidth": "202.96, X, 164.73, 164.74, 164.74, 164.76, 164.73, 164.74, 164.77, 164.77, 164.73, 164.77, 164.76, 164.78, 164.76, 164.73",
"p2p unidirectional write bandwidth": "191.68, X, 137.08, 137.58, 137.36, 136.93, 137.32, 137.66, 136.75, 136.97, 137.38, 137.24, 136.73, 137.26, 137.54, 137.35"
}
}
```


**表1 显示结果参数说明**

| 参数 | 说明 |
| --- | --- |
| 值 | 具体Device对应的带宽或算力数值。 带宽诊断单位为GB/s，算力诊断单位为TFLOPS。 |
| X/NA | 不支持显示此数值。 |
| FAIL | 执行结果失败。 |