正如标题所说。我无法运行h20.init。
我已经下载了Java SE开发工具包8u291的64位版本。我还下载了R(install.packages("xgboost")(中的xgboost库。最后，我更新了我所有的NVIDIA驱动程序，并下载了最新的CUDA(尽管，我甚至不知道它能做什么(。我遵循了NVIDIA论坛中描述的步骤，以避免安装时出现崩溃(即删除与visual studio的集成(。FWIW我使用的是DELL Inspiron 15游戏，它有一个4GB的NVIDIA GTX 1050。
以下是我正在使用的完整代码(除了第一行外，直接来自h2o下载说明(：
library(xgboost)
library(h2o)
localH2O = h2o.init()
demo(h2o.kmeans)
任何帮助都将不胜感激。
我在运行上面的代码块时得到的完整消息：
H2O is not running yet, starting it now...
Note: In case of errors look at the following log files:
C:Users<my username>AppDataLocalTempRtmpcdvCcefile1a106074110b/h2o_<my username>_started_from_r.out
C:Users<my username>AppDataLocalTempRtmpcdvCcefile1a10253139db/h2o_<my username>_started_from_r.err
java version "15.0.2" 2021-01-19
Java(TM) SE Runtime Environment (build 15.0.2+7-27)
Java HotSpot(TM) 64-Bit Server VM (build 15.0.2+7-27, mixed mode, sharing)
Starting H2O JVM and connecting: ............................................................Diagnostic HTTP Request:
HTTP Status Code: -1
HTTP Error Message: Failed to connect to localhost port 54321: Connection refused
Cannot load library from path lib/windows_64/xgboost4j_gpu.dll
Cannot load library from path lib/xgboost4j_gpu.dll
Failed to load library from both native path and jar!
Cannot load library from path lib/windows_64/xgboost4j_omp.dll
Cannot load library from path lib/xgboost4j_omp.dll
Failed to load library from both native path and jar!
Cannot load library from path lib/windows_64/xgboost4j_minimal.dll
Cannot load library from path lib/xgboost4j_minimal.dll
Failed to load library from both native path and jar!
Failed to add native path to the classpath at runtime
java.io.IOException: Failed to get field handle to set library path
at ai.h2o.xgboost4j.java.NativeLibLoader.addNativeDir(NativeLibLoader.java:229)
at ai.h2o.xgboost4j.java.NativeLibLoader.initXGBoost(NativeLibLoader.java:43)
at ai.h2o.xgboost4j.java.NativeLibLoader.getLoader(NativeLibLoader.java:66)
at hex.tree.xgboost.XGBoostExtension.initXgboost(XGBoostExtension.java:70)
at hex.tree.xgboost.XGBoostExtension.isEnabled(XGBoostExtension.java:51)
at water.ExtensionManager.isEnabled(ExtensionManager.java:189)
at water.ExtensionManager.registerCoreExtensions(ExtensionManager.java:103)
at water.H2O.main(H2O.java:2203)
at water.H2OStarter.start(H2OStarter.java:22)
at water.H2OStarter.start(H2OStarter.java:48)
at water.H2OApp.main(H2OApp.java:12)
Cannot initialize XGBoost backend! Xgboost (enabled GPUs) needs:
- CUDA 8.0
XGboost (minimal version) needs:
- GCC 4.7+
For more details, run in debug mode: `java -Dlog4j.configuration=file:///tmp/log4j.properties -jar h2o.jar`
ERROR: Unknown argument (<my username>/AppData/Local/Temp/RtmpcdvCce)
Usage: java [-Xmx<size>] -jar h2o.jar [options]
(Note that every option has a default and is optional.)
-h | -help
Print this help.
-version
Print version info and exit.
-name <h2oCloudName>
Cloud name used for discovery of other nodes.
Nodes with the same cloud name will form an H2O cloud
(also known as an H2O cluster).
-flatfile <flatFileName>
Configuration file explicitly listing H2O cloud node members.
-ip <ipAddressOfNode>
IP address of this node.
-port <port>
Port number for this node (note: port+1 is also used by default).
(The default port is 54321.)
-network <IPv4network1Specification>[,<IPv4network2Specification> ...]
The IP address discovery code will bind to the first interface
that matches one of the networks in the comma-separated list.
Use instead of -ip when a broad range of addresses is legal.
(Example network specification: '10.1.2.0/24' allows 256 legal
possibilities.)
-ice_root <fileSystemPath>
The directory where H2O spills temporary data to disk.
-log_dir <fileSystemPath>
The directory where H2O writes logs to disk.
(This usually has a good default that you need not change.)
-log_level <TRACE,DEBUG,INFO,WARN,ERRR,FATAL>
Write messages at this logging level, or above. Default is INFO.
-max_log_file_size
Maximum size of INFO and DEBUG log files. The file is rolled over after a specified size has been reached.
(The default is 3MB. Minimum is 1MB and maximum is 99999MB)
-flow_dir <server side directory or HDFS directory>
The directory where H2O stores saved flows.
(The default is 'C:Users<my username>h2oflows'.)
-nthreads <#threads>
Maximum number of threads in the low priority batch-work queue.
(The default is.)
-client
Launch H2O node in client mode.
-notify_local <fileSystemPath>
Specifies a file to write when the node is up. The file contains one line with the IP and
port of the embedded web server. e.g. 192.168.1.100:54321
-context_path <context_path>
The context path for jetty.
Authentication options:
-jks <filename>
Java keystore file
-jks_pass <password>
(Default is 'h2oh2o')
-jks_alias <alias>
(Optional, use if the keystore has multiple certificates and you want to use a specific one.)
-hostname_as_jks_alias
(Optional, use if you want to use the machine hostname as your certificate alias.)
-hash_login
Use Jetty HashLoginService
-ldap_login
Use Jetty Ldap login module
-kerberos_login
Use Jetty Kerberos login module
-spnego_login
Use Jetty SPNEGO login service
-pam_login
Use Jetty PAM login module
-login_conf <filename>
LoginService configuration file
-spnego_properties <filename>
SPNEGO login module configuration file
-form_auth
Enables Form-based authentication for Flow (default is Basic authentication)
-session_timeout <minutes>
Specifies the number of minutes that a session can remain idle before the server invalidates
the session and requests a new login. Requires '-form_auth'. Default is no timeout
-internal_security_conf <filename>
Path (absolute or relative) to a file containing all internal security related configurations
Cloud formation behavior:
New H2O nodes join together to form a cloud at startup time.
Once a cloud is given work to perform, it locks out new members
from joining.
Examples:
Start an H2O node with 4GB of memory and a default cloud name:
$ java -Xmx4g -jar h2o.jar
Start an H2O node with 6GB of memory and a specify the cloud name:
$ java -Xmx6g -jar h2o.jar -name MyCloud
Start an H2O cloud with three 2GB nodes and a default cloud name:
$ java -Xmx2g -jar h2o.jar &
$ java -Xmx2g -jar h2o.jar &
$ java -Xmx2g -jar h2o.jar &
所以。。。经过一番试探，我找到了答案。Windows Defender ughhh阻止了对h2o.jar的访问。解决方案是打开h2o-java文件夹上的PowerShell，并使用java -jar h2o.jar运行h2o.jar。然后你会收到安全提示，要求你授权该程序(我每次都必须这样做，所以你可能想检查你的设置(。一旦你做到了，h2o.init()在R.中运行得非常顺利