Porting GMP 5.0.1 to IBM BlueGene/P

[Andrew Mattingly]

I am trying to port GMP to run on BG/P (the chip is powerpc-like, but 
different enough to cause issues sometimes), but even when I specify 
"--host=none-unknown-linux-gnu" to get a generic build, many of the 
verification tests fail (details below).  Does anyone recognise these 
problems and can you suggest a way around them?  Any assistance is greatly 
appreciated.

t-bdiv reports:

*******************************************************************************
mpn_mu_bdiv_qr inconsistent in test 5
N=   000fffff ffffffff ffffffff ffffffff ... 00000000 00000000 00000000 
00000000
D=   000003ff ffffffff ffffffff ffffffff ... ffffffff ffffffff ffffffff 
ffffffff
Q=   d222dc33 0031ff94 e41b919f 87e1ec00 ... 00000000 00000000 00000000 
00000000
R=   000ffcb7 748f33ff 3801ac6f 925c7974 ... 4e800083 7ed8300a a7c0bf83 
ff5afe31
Rb=  0, Cy=0
T=   00100000 00000000 00000000 00a2f793 ... 00000000 00000000 00000000 
00000000
nn = 2713, dn = 727, qn = 1986
*******************************************************************************

t-div reports:
*******************************************************************************
mpn_dcpi1_div_qr failed test 1: q too small
N=    000fffff ffffffff ffffffff ffffffff ... 00000000 00000000 00000000 
00000000
D=    80000fff ffffffff ffffffff ffffffff ... ffffffff ffffffff ffffffff 
ffffffff
Q=    00000000 001ffffc 00007fff f00001ff ... 82352d1a 35a7a2c8 59b1b958 
80fe43b4
R=    7a95c83d e2094b0c 571b4b9b 9eb17452 ... 82352d1a 35a7a2c8 59b1b958 
80fe43b4
N-Q*D=00000000 00000000 00000000 00000000 ... 82352d1a 35a7a2c8 59b1b958 
80fe43b4
nn = 5045, dn = 939, qn = 4107

t-divis just hangs and doesn't report anything

t-fdiv reports:

ERROR
dividend = 
-7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...
divisor  = 
-7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF!
 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...

t-gcd reports:

ERROR in test 0
mpz_gcdext returned invalid result
op1=110545CB3F76B25B353B668A9B13477A440FCB5713B52617A8F161F8C02183534B2B1FC3CFF63A4585F1D66A466FED1EB2D3775746ACFAE663546EF8E7...
op2=4415172CFDDAC96CD4ED9A2A6C4D1DE9103F2D5C4ED4985EA3C587E300860D4D2CA83DBE111E22967ED4D43C4C05797EFC55FFE82F7AE078907806...
mpz_gcdext returns:
1FFFFFFFFFFFFFFC01FFFC000000000000000FFFFFFFFFFFFFFFFFFFFF00000000000000000000001FFFFFFFFC000001
s=-3B38BB5C3333C2CC262A0643CCF27B735C16FB1898D6A186F1344D35958DD31797A7CCCC84EFB3C557DA4E94CD71CDE5A0A5E38CFA413BEC26C967B1...

The following tests also fail:
t-hgcd, t-invert, t-mullo, t-perfpow, t-pow, t-powm, t-powm_ui, t-root, 
t-sqrtrem, t-tdiv, t-toom8h

Kind regards
Andrew Mattingly
IBM Australia