CM5 Stream_s results

From: rsw@hydra.maths.unsw.EDU.AU
Date: Thu Apr 29 1993 - 20:35:53 CDT


 STREAM: Measure memory transfer rates in MB/s
 for simple computational kernels in Fortran

 SunOS Release 4.1.2 (CMGENERIC) #14:
 CMOST Version 7.2 beta1.1-P2: Thu Jan 21 14 :15:00 EST 1993

 cpio% cmf -O -o s_so -implicit_none stream_s.fcm
 cmf [CM5 VecUnit 2.1 Beta 0]

 CALL CMF_describe_array(a)

 Descriptor address : 7aaac

  desc_or_obj_kind : array argument
  debug info: <nil>
  element_type : float
  spare1 : 0
  spare2 : 0
  home : cm
  cm_location : 1342807592
  initial_data : ffffffff
  user_rank : 1
  axes_extents : 5000000
  axes_layout_maps : 1
  is_modified? : no
  array_geometry : 95fd0
  spare6 : ffffffff
  geometry_rank : 1
  geometry_offsets : 0
  axes_extents_ptr : 7adcc
  axes_maps_ptr : 7ad58
  geometry_offsets_ptr : 7ad54
  debug_info_ptr : 0
  view_or_thread_ptr : ffffffff
  is_slicewise : 1
  element_size : 4

Array geometry id: 0x95fd0
  Rank: 1
  Number of elements: 5000000
  Extents: [5000000]
  Machine geometry id: 0x95f70, rank: 1, column major
   Machine geometry elements: 5000192
   Overall subgrid size: 78128
  Axis 0:
   Extent: 5000192 (64 physical x 78128 subgrid)
   Off-chip: 6 bits, mask = 0x3f
   Subgrid: length = 78128, axis-increment = 1

 CM5 with partition of 16 processors ( 64 vector units )

--------------------------------------
 Single precision appears to have 7 digits of accuracy
 Assuming 4 bytes per default REAL word
--------------------------------------

 Vector length = 5000000
 Timing calibration: Time = 6.677066 hundredths of a second
 Increase the size of the arrays if this is < 30
 and your clock precision is = < 1/100 second

 ---------------------------------------------------------
 Function : Rate (MB/s) RMS time Min time Max time
 Assignment: 1420.9683 0.0282 0.0281 0.0295
 Scaling : 1422.6085 0.0282 0.0281 0.0295
 Summing : 2133.0415 0.0281 0.0281 0.0282
 SAXPYing : 2133.1265 0.0282 0.0281 0.0295



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