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vparashar
Contributor
Contributor
837 Views
Registered: ‎05-22-2018

dram test interpretation

Dear all,

I ran a dram test for a 4 GB DIMM on my custom board.

I got following results:

Enter Test Option:

8

Starting Memory Test '8' - Testing 4GB length from address 0-------------------------------------------+-----------

TEST | ERROR | PER-BYTE-LANE ERROR COUNT | TIME

| COUNT | LANES [ #0, #1, #2, #3, #4, #5, #6, #7] | (sec)

---------+--------+------------------------------------------------+-----------

MT0(1: 0)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 86.5615

---------+--------+------------------------------------------------+-----------

MTS(1: 1)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 43.8807

---------+--------+------------------------------------------------+-----------

0, 0, 0, 0, 0, 0 | 43.8807

---------+--------+------------------------------------------------+-----------

MTS(1: 3)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 43.8971

---------+--------+------------------------------------------------+-----------

MTS(1: 4)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 43.8807

---------+--------+------------------------------------------------+-----------

MTS(1: 5)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 43.8807

---------+--------+------------------------------------------------+-----------

MTS(1: 6)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 43.8807

---------+--------+------------------------------------------------+-----------

MTS(1: 7)| 0 | 0, 0, 0 | 43.8965

---------+--------+------------------------------------------------+-----------

MTS(1: 8)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 43.8807

---------+--------+------------------------------------------------+-----------

MTP(1: 9)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 69.9787

---------+--------+------------------------------------------------+-----------

MTP(1:10)| 0 | 0, 0, 0 | 70.0095

---------+--------+------------------------------------------------+-----------

MTL(1:11)| 0 | 0, 0, 0 | 75.4176

---------+--------+------------------------------------------------+-----------

0, 0, 0, 0, 0, 0 | 75.4176

---------+--------+------------------------------------------------+-----------

MTL(1:13)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 75.417

---------+--------+------------------------------------------------+-----------

MTL(1:14)| 0 | 0, 0, 0, 0, 0, 0, 0, 0 | 75.417

---------+--------+------------------------------------------------+-----------

Bus Width = 64, D-cache is enable, Verbose Mode is ON

 

Read Eye Test Results :

---------+---------+---------+---------+---------+---------+---------+---------+

LANE-0 | LANE-1 | NE-5 | LANE-6 | LANE-7 |

---------+---------+---------+---------+---------+---------+---------+---------+

AUTO CENTER:

---------+---------+---------+---------+---------+---------+---------+----------

46,47 | 42,40 | 41,40 | 42,38 | 35,38 | 39,39 | 40,42 | 37,40 |

---------+---------+---------+---------+---------+---------+---------+----------

TAP value (ps):

---------+---------+---------+---------+---------+---------+---------+----------

5.51 | 5.51 | 5.51 | 5.51 | 5.51 | 5.51 | 5.51 | 5.51 |

---------+---------+---------+---------+---------+---------+---------+----------

TAPS/cycle:

---------+---------+---------+---------+---------+---------+---------+----------

85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 |

---------+---------+---------+---------+---------+---------+---------+----------

EYE WIDTH (ps):

---------+---------+---------+---------+---------+---------+---------+----------

297.80 | 308.83 | 336.40 | 270.22 | 325.37 | 319.86 | 303.31 | 286.77 |

---------+---------+---------+---------+---------+---------+---------+----------

EYE WIDTH (%):

---------+---------+---------+---------+---------+---------+---------+----------

63.53 | 65.88 | 71.76 | 57.65 | 69.41 | 68.24 | 64.71 | 61.18 |

---------+---------+---------+---------+---------+---------+---------+----------

EYE CENTER:

---------+---------+---------+---------+---------+---------+---------+----------

43,44 | 43,4| 35,35 | 38,40 | 35,38 |

---------+---------+---------+---------+---------+---------+---------+----------

Enabling VT compensation... DONE

Bus Width = 64, D-cache is enable, Verbose Mode is ON

 

Write Eye Test Results:

---------+---------+---------+---------+---------+---------+---------+---------+

LANE-0 | LANE-1 | LANE-2 | LANE-3 | LANE-4 | LANE-5 | LANE-6 | LANE-7 |

---------+---------+---------+---------+---------+---------+---------+---------+

AUTO CENTER:

---------+---------+---------+---------+---------+---------+---------+----------

1,35 | 0,49 | 1, 5 | 1,16 | 1,11 | 1, 5 | 1,20 | 1,29 |

---------+---------+---------+---------+---------+---------+---------+----------

TAP value (ps):

---------+---------+---------+---------+---------+---------+---------+----------

5.51 | 5.51 | 5.51 | 5.39 | 5.33 | 5.45 | 5.33 | 5.45 |

---------+---------+---------+---------+---------+---------+---------+----------

TAPS/cycle:

---------+---------+---------+---------+---------+---------+---------+----------

85 | 85 | 85 | 87-+---------+---------+---------+---------+---------+----------

EYE WIDTH (ps):

---------+---------+---------+---------+---------+---------+---------+----------

319.86 | 358.46 | 380.52 | 341.92 | 386.03 | 375.00 | 352.94 | 358.46 |

---------+---------+---------+---------+---------+---------+---------+------+---------+---------+---------+---------+---------+---------+----------

68.24 | 76.47 | 81.18 | 72.94 | 82.35 | 80.00 | 75.29 | 76.47 |

---------+---------+---------+---------+---------+---------+---------+----------

EYE CENTER:

---------+---------+---------+---------+---------+---------+---------+----------

1,40 | 0,50 | 1, 6 | 1,17 | 1,12 | 1, 6 | 1,22 | 1,30 |

---------+---------+---------+---------+---------+---------+---------+----------

Enabling VT compensation... DONE

Bus Width = 64, D-cache is enable, Verbose Mode is OFF

 

I am not able to interpret these results.

Kindly help

 

 

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3 Replies
drjohnsmith
Teacher
Teacher
797 Views
Registered: ‎07-09-2009

which test you running ?
any documentation for it ?
<== If this was helpful, please feel free to give Kudos, and close if it answers your question ==>
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vparashar
Contributor
Contributor
765 Views
Registered: ‎05-22-2018

This test is available in sdk as a template 'dram test'. I am not able to find any relevant documentation for the same.

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thomas136
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Registered: ‎09-03-2018