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    <p class="MsoNormal"><span
        style="font-size:12.0pt;line-height:115%;font-family:
        "Times New
Roman","serif";mso-ascii-theme-font:major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi">Hi,</span></p>
    <p class="MsoNormal"><span
        style="font-size:12.0pt;line-height:115%;font-family:
        "Times New
Roman","serif";mso-ascii-theme-font:major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;mso-no-proof:yes">I</span><span
        style="font-size:12.0pt;line-height:115%;font-family:"Times
        New Roman","serif";
mso-ascii-theme-font:major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:
        major-bidi"> think that the topic is more suited for
        PETSc-developers than its
        users; therefore, <span style="mso-no-proof:yes">I</span> move
        it to the dev
        list.</span></p>
    <p class="MsoNormal"><span
        style="font-size:12.0pt;line-height:115%;font-family:
        "Times New
Roman","serif";mso-ascii-theme-font:major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi">Continuing
        the discussion <span style="mso-no-proof:yes">on</span>
        implementing a variable-block size BILU
        preconditioner, would it be possible to change the block size
        parameter (bs) on
        BAIJ format such that it can handle variable block sizes? (i.e.,
        instead of it
        being a scalar, it can be an array). Although BILU does not
        necessarily require
        rectangular blocks, <span style="mso-no-proof:yes">I</span>
        think, it leads to <span style="mso-no-proof:yes">less</span>
        messy code.</span></p>
    <p class="MsoNormal"><span
        style="font-size:12.0pt;line-height:115%;font-family:
        "Times New
Roman","serif";mso-ascii-theme-font:major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:major-bidi;mso-no-proof:yes">Also</span><span
        style="font-size:12.0pt;line-height:115%;font-family:"Times
        New Roman","serif";
mso-ascii-theme-font:major-bidi;mso-hansi-theme-font:major-bidi;mso-bidi-theme-font:
        major-bidi">, being a newbie on PETSc code, <span
          style="mso-no-proof:yes">I</span>
        do not understand some parts of the code, especially distributed
        matrix storage
        and some of the implemented numerical algorithms. Is there any
        reference that <span style="mso-no-proof:yes">I</span> can use
        for this?</span></p>
    <p class="MsoNormal"> </p>
    <pre class="moz-signature" cols="72">-- 
Ali Reza Khaz’ali
Assistant Professor of Petroleum Engineering,
Department of Chemical Engineering
Isfahan University of Technology
Isfahan, Iran
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