Re: [Rd] R-3.0.1 - "transient" make check failure in splines-EX.r

[Paul Gilbert]

Avraham

I resolved this only by switching to a different BLAS on the 32 bit 
machine.Since no one else seemed to be having problems, I considered it 
possible that there was a hardware issue on my old 32 bit machine. The R 
check test failed somewhat randomly, but often. most disconcertingly, it 
failed because it gives different answers. If you source the code in an 
R session a few times you have no trouble reproducing this. It gives the 
impression of an improperly zeroed matrix.

(All this from memory, I'm on the road.)

Paul

On 13-05-28 06:36 PM, Adler, Avraham wrote:

Hello.

I seem to be having the same problem that Paul had in the thread titled "[Rd] R 2.15.2 make check 
failure on 32-bit --with-blas="-lgoto2"" from October of last year 
<https://stat.ethz.ch/pipermail/r-devel/2012-October/065103.html> Unfortunately, that thread ended 
without an answer to his last question.

Briefly, I am trying to compile an Rblas for Windows NT 32bit using OpenBlas (successor 
to GotoBlas) (Nehalem - corei7), and the compiled version passes all tests except for the 
"splines-Ex" test in the exact same place that Paul had issues:

~~~~
stopifnot(identical(ns(x), ns(x, df = 1)),
+           identical(ns(x, df = 2), ns(x, df = 2, knots = NULL)), # not true 
till 2.15.2
+           !is.null(kk <- attr(ns(x), "knots")), # not true till 1.5.1
+           length(kk) == 0)
Error: identical(ns(x, df = 2), ns(x, df = 2, knots = NULL)) is not TRUE
~~~~

Yet, opening up R and running the actual code shows that the error is transient:

~~~~
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] FALSE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] TRUE
identical(ns(x, df = 2), ns(x, df = 2, knots = NULL))
[1] FALSE
~~~~

This is the only error I have on the 32-bit version, I believe (trying to build 
a blas for 64-bit on SandyBridge is a completely different kettle of fish that 
is causing me to pull out what little hair I have left), and if it can be 
solved that would be great.

Thank you,

Avraham






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