parallel-processing

问题 I'm trying to run R in parallel to run a regression. I'm trying to use the snowfall library (but am open to any approach). Currently, I'm running the following regression which is taking an extremely long time to run. Can someone show me how to do this? sales_day_region_ctgry_lm <- lm(log(sales_out+1)~factor(region_out) + date_vector_out + factor(date_vector_out) + factor(category_out) + mean_temp_out) I've started down the following path: library(snowfall) sfInit(parallel = TRUE, cpus=4,

问题 I have created a GPU based indicator for MetaTrader Terminal platform, using OpenCL and MQL5. I have tried hard that my [ MetaTrader Terminal: Strategy Tester ] optimization job must get transferred on GPU to maximum. Most of the calculations are done by the indicator. Hence, I made changes in the indicator and has completely transferred on GPU. But the real issue arises when I try to go for optimization process in the strategy tester section. The process I see uses both my GPU and CPU but

问题 I've got code which looks something like this: Parallel.Foreach(ItemSource(),(item)=>DoSomething(item)); ItemSource() produces an infinite stream of items. I want the loop to exit once some condition has been met, and I'd rather do it without throwing an exception in DoSomething (I consider this approach a bad programming style). Ideally, there would be something like cancellationToken. I would call cancellationToken.Activate() in one or more threads, after which parallel.foreach would stop

问题 I am new to Scala, and was trying to use some parallel constructs( Future in particular). I found there is an implicit parameter of type ExecutionContext . IMO, it is something similar to(and maybe more abstract than) the concept of thread pool. I have tried to learn it through documentation, but I cannot find any clear and detailed introduction about it. Could anyone please explain what exactly execution context is in Scala? And what is the purpose of introducing execution context to the

来源： https://stackoverflow.com/questions/47958163/tesseract-ocr-large-number-of-files

来源： https://stackoverflow.com/questions/47958163/tesseract-ocr-large-number-of-files

来源： https://stackoverflow.com/questions/47958163/tesseract-ocr-large-number-of-files

来源： https://stackoverflow.com/questions/38483874/intermediate-results-from-joblib

来源： https://stackoverflow.com/questions/62249186/how-to-use-prange-in-cython

来源： https://stackoverflow.com/questions/56439842/pthreads-vs-parallel-for-infinite-loops-on-php