我目前正在使用furrr
我的模型创建更有条理的执行。我使用 adata.frame
以有序的方式将参数传递给函数,然后使用 将furrr::future_map()
函数映射到所有参数。在我的本地机器(OSX)上使用顺序和多核期货时,该功能可以完美运行。
现在,我想测试创建自己的 AWS 实例集群的代码(如图所示)。
我使用链接的文章代码创建了一个函数:
make_cluster_ec2 <- function(public_ip){
ssh_private_key_file <- Sys.getenv('PEM_PATH')
github_pac <- Sys.getenv('PAC')
cl_multi <- future::makeClusterPSOCK(
workers = public_ip,
user = "ubuntu",
rshopts = c(
"-o", "StrictHostKeyChecking=no",
"-o", "IdentitiesOnly=yes",
"-i", ssh_private_key_file
),
rscript_args = c(
"-e", shQuote("local({p <- Sys.getenv('R_LIBS_USER'); dir.create(p, recursive = TRUE, showWarnings = FALSE); .libPaths(p)})"),
"-e", shQuote("install.packages('devtools')"),
"-e", shQuote(glue::glue("devtools::install_github('user/repo', auth_token = '{github_pac}')"))
),
dryrun = FALSE)
return(cl_multi)
}
然后,我创建集群对象,然后检查它是否连接到正确的实例
public_ids <- c('public_ip_1', 'public_ip_2')
cls <- make_cluster_ec2(public_ids)
f <- future(Sys.info())
当我打印时,f
我得到了我的一个远程实例的规格,这表明套接字已正确连接:
> value(f)
sysname
"Linux"
release
"4.15.0-1037-aws"
version
"#39-Ubuntu SMP Tue Apr 16 08:09:09 UTC 2019"
nodename
"ip-xxx-xx-xx-xxx"
machine
"x86_64"
login
"ubuntu"
user
"ubuntu"
effective_user
"ubuntu"
但是当我使用我的集群计划运行我的代码时:
plan(list(tweak(cluster, workers = cls), multisession))
parameter_df %>%
mutate(model_traj = furrr::future_pmap(list('lat' = latitude,
'lon' = longitude,
'height' = stack_height,
'name_source' = facility_name,
'id_source' = facility_id,
'duration' = duration,
'days' = seq_dates,
'daily_hours' = daily_hours,
'direction' = 'forward',
'met_type' = 'reanalysis',
'met_dir' = here::here('met'),
'exec_dir' = here::here("Hysplit4/exec"),
'cred'= list(creds)),
dirtywind::hysplit_trajectory,
.progress = TRUE)
)
我收到以下错误:
Error in file(temp_file, "a") : cannot open the connection
In addition: Warning message:
In file(temp_file, "a") :
cannot open file '/var/folders/rc/rbmg32js2qlf4d7cd4ts6x6h0000gn/T//RtmpPvdbV3/filecf23390c093.txt': No such file or directory
我无法弄清楚引擎盖下发生了什么,我也无法traceback()
从我的远程机器上看到错误。我已经测试了与文章中示例的连接,并且事情似乎运行正常。我想知道为什么要tempdir
在执行期间创建一个。我在这里想念什么?
(这也是repo中的一个问题)furrr