Avraham Adler

According to Visual Studio, rhe error comes from line 298 in [histogram.cu](https://github.com/dmlc/xgboost/blob/master/src/tree/gpu_hist/histogram.cu) which reads: `constexpr int kMinItemsPerBlock = kItemsPerTile;` If that helps.

Which are the offending routines?

I had a little free time today, so I forked loo, created an Rcpp branch, and tried my hand at something simple: moving gpdfit (and thus lx) to C++ using...

My pleasure. I didn't create a pull request since I personally do not use roxygen in my packages and was afraid to mess things up. In my experience, I've found...

Also, to be honest, I spent very little time trying to optimize the C++; rather, I followed the R code pretty much up a tree and off a cliff trying...

Crazy busy at work, but I can probably try in a week or three. Have you looked into the code already posted? Avi On Sun, Apr 22, 2018 at 12:11...

How is it being multithreaded? Is OpenMP being used?

Zstd is at 1.5.2 now: https://github.com/facebook/zstd/releases/tag/v1.5.2

@bgoodri Hi. LTO as it is implemented in GCC 4.9.3 which underlies the current version of Rtools is either incomplete or incorrect. When I tried to build even base R...

@jeroen I'm not sure what you mean by enable. The toolchain, at least as of 3.4, has LTO enabled, but its implementation in GCC 4.9.3 was incomplete and often not...