i have never used the share function, thanks for posting info of how to use that

-b should be = GPU compute units x1 or x2 - so this is specific to your GPU
-t is number of threads that will run pr. block
-p is number of keys pr. process
regards your range other have posted these scanned ranges from 34xx to 40xx as below:
342D5C6012D65200:342D5C7A5ABE1200
3469B57012D65200:3469B58334E89200
346F59016D4B1200:346F59122D9F9200
347EB5016D4B1200:347EB517E4A2D200
347EB590134B1200:347EB59B86CFD200
348D7B106D4B1200:348D7B2110539200
348D7B406D4B1200:348D7BA049D21200
3490BE2011975200:3490BE3028DA9200
3495B01801975200:3495B01E88AF5200
349EB12C01975200:349EB1345FECD200
349FA68001975200:349FA6D96B9B1200
34B0F6901126D200:34B0F691E0689200
34B2E60130689200:34B2E6F130689200
34B2E60130689200:34B2E607F83F9200
34ccccbde61a2d01:34cccd086798cd01
34cccccdc0f0cd01:34cccd086798cd01
34E65901C3059000:34E65908FE959000
35B62D12BBAAE400:35B62D97FAFEE400
35B6EA0DA4B7AA00:35B6EA42BBAAE400
38BD94011E960600:38BD941FF6180600
38BD94211E960600:38BD94411E960600
38BD94411E960600:38BD9451840CCE00
38BD94611E960600:38BD94911E960600
38BD94911E960600:38BD94AF35390600
38BD94B11E960600:38BD94CC43CE0600
3961B406A89706AE:3961CBBAE38006AF
39CC4FD64D7206AF:39CC5B89073486AF
3A54B01194BCB600:3A54B11194BCB600
3A54B11194BCB600:3A54B21194BCB600
3A54B21194BCB600:3A54B31194BCB600
3A54B31194BCB600:3A54B32BD3F9B600
3A54B41194BCB600:3A54B42C6838E200
3A54B51194BCB600:3A54B5473E0AB600
3A54B61194BCB600:3A54B6422EC0F600
3B469D313E960600:3B469D5615400600
3B469E013E960600:3B469E14433D0600
3B469E201E960600:3B469EB5A2F40600
3B469E64B6668600:3B469EB5A2F40600
3B469F013E960600:3B469F123EA30600
3B469F313E960600:3B469F43B96BC600
3B469F613E960600:3B469F6B793D0600
3b5c3ea5c8e2db12:3b5c3f220b62db12
3b5c3f220b62db12:3b5c4283bb62db12
3B8EAC0100000000:3B8EAC1C3247C000
3B96D40201D19600:3B96D412686D5600
3B96D435016D5600:3B96D439BB24D600
3B96D435016D5600:3B96D43F6CC19600
3B96D462016D5600:3B96D46399C09600
3B96D464016D5600:3B96D466C60B9600
3B96D467016D5600:3B96D470B1E55600
3B96D870116D5600:3B96D872732B1600
3B96D874016D5600:3B96D87BE16B1600
3B96D87C016D5600:3B96D8818E535600
3B96D8B2016D5600:3B96D8BCF2F0D600
3B96D8BD016D5600:3B96D8C373351600
3B9D641F628CB600:3B9D64EA6D4F3600
3BD46A25016D5600:3BD46A28E0071600
3BD46A2B016D5600:3BD46A2DB93A5600
3BD46A2E016D5600:3BD46A305DACD600
3BD46A35016D5600:3BD46A3863841600
3BD46A3863841600:3BD46A3E00E4D600
3BD46A52016D5600:3BD46A562E271600
3BD46A58016D5600:3BD46A5B47709600
3BD46A5E016D5600:3BD46A6031BAD600
3BD46A91016D5600:3BD46A9360BA1600
3BD46A96016D5600:3BD46A9852141600
3BD46A9A016D5600:3BD46A9FCAC01600
3BD46C52016D5600:3BD46C57BA455600
3BD46C57016D5600:3BD46C6196C71600
3BE7860492443600:3BE78644F1C23600
3BE786A00E80F600:3BE786AA05C5F600
3BE786B011C23600:3BE786BBF1EB7600
3C13B4010D2BF600:3C13B445E33DF600
3C14B401C26C3600:3C14B421C26C3600
3C14B421C26C3600:3C14B436F04C3600
3C14B621C26C3600:3C14B64708E73600
3C14B671C26C3600:3C14B68401CF3600
3C15B405E33DF600:3C15B436255E3600
3C23B401C26C3600:3C23B42B407E3600
3C25B901C26C3600:3C25B9423F363600
3C52E605E33DF600:3C52E6303597B600
3C569520F1000000:3C5695AECBD80000
3C59B520F1000000:3C59B5383CBEC000
3C81E705E33DF600:3C81E74F628CB600
3C9B472E01000000:3C9B49565CE1C000
3CA4D520F1000000:3CA4D57FB1E4D800
3CA4D620F1000000:3CA4D6F832AA0000
3CA5291101600000:3CA529121D304000
3CA5291501600000:3CA52919EC87C000
3CA5291C01600000:3CA5292414A2C000
3CA529A201600000:3CA529A63E948000
3CA529B201600000:3CA529B5B7150000
3CA529B601600000:3CA529BE31EEC000
3CA5E43017100000:3CA5E43193EC0000
3CA5E43501600000:3CA5E43F15F10000
3CA5E46017100000:3CA5E4618BFCC000
3CA5E46201600000:3CA5E463697B8000
3CA5E46701600000:3CA5E46874780000
3CA5E49017100000:3CA5E49181004000
3CA62E1051600000:3CA62EC25B60C000
3CAA6015C05F2934:3CAA60A1957DA934
3D0E9B850119B600:3D0E9B8A486B3600
3D0F9B850119B600:3D0F9B8B97807600
3D15B6010D2BF600:3D15B8648B60A600
3D16B8310D2BF600:3D16B8CF31CA7600
3D1E9B850119B600:3D1E9B9015677600
3D1F9B850119B600:3D1F9B8C875EB600
3D29B6010D2BF600:3D29B66C56FDF600
3D29B67001FDF600:3D29B671E8713600
3D29B67401FDF600:3D29B679F1283600
3D29B67C01FDF600:3D29B6802CE2F600
3D29B68011FDF600:3D29B688D8B23600
3D29B82011FDF600:3D29B82703F23600
3D29B82901FDF600:3D29B82FEA2E3600
3D29B862012DF600:3D29B864459FB600
3D29B867012DF600:3D29B870F2587600
3D2F9B850119B600:3D2F9B8ACC413600
3D438B0168BDF600:3D438B4168BDF600
3D49B6011119B600:3D49B65454687600
3D49B67014687600:3D49B68C8FAAF600
3D49B68D01AAF600:3D49B692BE2C7600
3D4E9B801119B600:3D4E9BD201A9B600
3D5B87091119B600:3D5B87590DC8F600
3D5B8E091119B600:3D5B8E09D8809600
3D5B8E29D8809600:3D5B8E49D8809600
3D5B8E49D8809600:3D5B8E69D8809600
3D5B8E69D8809600:3D5B8E89D8809600
3D65C840090D3000:3D65C84CBE39B000
3D693B0401000000:3D693BAD952D3000
3D69B4010D2BF600:3D69B466E938B600
3D69B4501F19B600:3D69B45FB286F600
3D6AB3801119B600:3D6AB3813B8FF600
3D6AB3820119B600:3D6AB38C77EEF600
3D6AB38D0119B600:3D6AB38E13C23600
3D6AB38F0119B600:3D6AB3930F4EF600
3D6B9402628CB600:3D6B941172C03600
3D6B945022C03600:3D6B94F951E87600
3D76B5010D2BF600:3D76B560C4587600
3D76B5810D2BF600:3D76B7A372E7F600
3ddc8bab2da2c001:3ddc9bab2da2cf01
3ddc8bb176f60f01:3ddc9bab2da2cf01
3E16D4301101E934:3E16D4901101E934
3E26D4301101E934:3E26D4A1EEC9A934
3E2B36A01101E934:3E2B36AE622B2934
3E408B2011C01600:3E408B28EC989600
3E408B9011C01600:3E408BDF50015600
3E469A2501309600:3E469A270760D600
3E469A290160D600:3E469A2C0F3D1600
3E469A2E0160D600:3E469A30D4A51600
3E469A3501309600:3E469A3E1875D600
3E469A5201309600:3E469A5424ACD600
3E469A5801309600:3E469A610F4E1600
3E469A62014E1600:3E469A65A7249600
3E469A6701249600:3E469A691D4DD600
3E469A6A014DD600:3E469A73BB89D600
3E469A740189D600:3E469A7700C01600
3E469A7C0189D600:3E469A9C4CC01600
3E469AB01CC01600:3E469AB9866B1600
3E469AC011C01600:3E469AC26A561600
3E46D2501101E934:3E46D29751F96934
3E46D5201101E934:3E46D5305F33A934
3E49B850158CE934:3E49BAB87A2E6934
3E65B1700101E934:3E65B241C89EE934
3E67D490158CE934:3E67D64E56E22934
3E6AD359D8809600:3E6AD3743D181600
3E6D79401101E934:3E6D7A22758CE934
3E6DA720758CE934:3E6DB120758CE934
3E96D480105F2934:3E96D4906101E934
3E96D4910101E934:3E96D5056C796934
3e96e6dbb2c48134:3e96e74ea8c48134
3f5c29cc5635ca00:3f5c2b48ebb5ca00